– In the AT, the truth of God’s covenant with the chosen people is emphasized. God is faithful, whereas the Israelites are not:

Ex 34,6 : Lord, Lord, God compassionate and merciful, slow to anger, rich in goodness and faithfulness.

Num 23:19 : God is not a man to lie, nor one to repent.

Deut 7 :9: Recognize, therefore, that the Lord […] is truly God,[…] who keeps his covenant and his mercy.

Deut 32,4 : He is the Rock, perfect is his work, righteous, all his ways.

Ps 30,6 : Into your hands I commit my spirit; deliver me, O Lord, faithful God.

Ps 85,15 : But you, Lord, are a kind and compassionate God; slow to anger, full of mercy and faithfulness.

Ps 88,2-3 : I will sing of the goodness of the Lord forever; my mouth will publish your faithfulness from generation to generation.

Ps 131 :11 : The Lord swore an oath to David […]: “I will place a descendant of your race on your throne”.

Ps 145,6 : This is the God who made heaven and earth, the sea and all that they contain; that he is eternally true to his word.

1Sm 15:29 : He who is the truth of Israel does not lie, nor repents, for he is not a man to repent.

2Sm 15,20 : Return. Take yours with you and may the Lord be merciful and faithful to you.

Is 49 :7 : Kings will rise before you and princes will bow down, because of the Lord, who is faithful.

Is 65,16 : Whoever wishes to be blessed on earth, will wish to be blessed by the faithful God.

Jr 32,18-19 : You grant your favors to thousands, and punish children for the sins of the fathers.

– And proof with concrete actions:

Psalm 57 :4 : From the womb the wicked have gone astray, from birth the liars have gone astray.

Ps 90,3-4 : He will cover you with his feathers […]. His faithfulness will be a shield of protection for you.

Pr 3,23-24 : Then you will walk safely, without your foot stumbling.

Is 25,1-2 : You are my God; I will exalt you and praise your name, because you have carried out wonderful designs.

Mic 7,18-19 : What is the God who […] forgives the sin […] of his people, who does not get angry […] because he prefers mercy?

– Is an example for humanity:

Exodus 18:21 : But you shall choose wise men from among the people, men who fear God, […] and put them at the head of the people.

Josh 24:14 : Fear the Lord and serve him with all righteousness and faithfulness.

1Kings 2 :4 : If my children keep his ways and walk faithfully before him.

1Kings 3 :6 : You freely gave your grace to your servant David […], because he walked faithfully before you.

2 Kings 20:3 : Remember that I walked faithfully before you and that […] I did what was good in your eyes

Is 38,3 : Lord, remember that I have walked before you faithfully, with all my heart, according to your will.

Mal 2,6 : His mouth taught the truth, and no perversity was found on his lips.

– His Word is true:

2 Sam 7:28 : Now, O Lord Yahweh, you are God and your words are the same truth.

Ne 9,13 : You went down to Mount Sinai, you spoke to them from heaven and gave them righteous ordinances, true laws.

Ps 11:7 : The words of the Lord are sincere words, pure as silver refined […] seven times refined.

Ps 18:10-11 : The fear of the Lord is pure, enduring forever; the judgments of the Lord are true.

Ps 110,7-8 : The works of his hands are truth and justice, his precepts unchangeable.

Ps 118,86,138,142,151-152,160 : You have enacted your statutes in all righteousness and in all truth.

– He deigned to reveal it:

Ps 24 :5 : Direct me in your truth and teach me, for you are the God of my salvation and in you I trust always.

Ps 25:3 : I always have your goodness before my eyes, and I walk in your truth.

Ps 85:11 : Teach me your way, Lord, that I may walk in your truth.

Pr 8,6-7 : Only righteousness will issue from my lips, for my mouth proclaims the truth and my lips hate iniquity.

Ecclesiastes 12: 9-10 : Ecclesiastes applied himself to the search for agreeable sentences and to writing truthful sayings with accuracy.

Mal 2,6 : His mouth taught the truth, and no perversity was found on his lips.

– And sent us his own Son:

Jn 1:18 : No one has ever seen God. The only Son, who is in the bosom of the Father, has revealed it.

Gal 4,4-5 : But when the fullness of time had come, God sent his Son, who […] was born subject to a Law.

Heb 1:2 : He spoke to us lately by his Son, who appointed him the universal heir, through whom he created all things.

– For he is the truth of the Father:

Jo 1,14.17 : And we saw his glory, the glory that the only Son receives from his Father, full of grace and truth.

Jn 3,32-33 : He who receives his testimony confirms that God is true.

Jn 5:33 : You sent messengers to John, and he testified to the truth.

Jn 7:28 : However, I did not come from myself, but he who sent me is true, and you do not know him.

Jn 8:26 : But he who sent me is true, and what I have heard from him I tell the world.

Jo 14,6 : I am the way, the truth and the life; no one comes to the Father except through me.

Jn 17:17 : Sanctify them through the truth. Your word is truth.

Jn 18:37 : I was born and came into the world to bear witness to the truth. Everyone who is of the truth hears my voice.

Rom 15:8: For I assure you that Christ exercised his ministry among the uncircumcised to demonstrate the truth of God.

Eph 4:21 : If indeed you have heard and learned from him, as is fitting for the truth in Jesus.

Rev 3: 7: Write to the angel of the church in Philadelphia: This is what the Holy and True, who has the key of David, says.

– Expressed faithfully by him:

Jn 6:32 : Truly, truly, I say to you, […] my Father is the one who gives you the true bread from heaven.

Jn 7,16-17 : My doctrine is not mine, but his who sent me.

Jo 8,40.45 : But now you seek to take my life, I who told you the truth that I heard from God!

Jn 12:50 : And I know that his commandment is eternal life.

Jn 14:10 : Do you not believe that I am in the Father and that the Father is in me? The words that I say to you, I do not say them on my own.

Jn 17,8.14 : I conveyed the words you entrusted to me and they […] truly recognized that I came from you.

2Cor 1,19 : The Son of God, Jesus Christ […] we have announced to you, it was not “yes” and then “no”, but it was always “yes”.

Eph 1:13 : You too, after hearing the word of truth […] were sealed with the Holy Spirit.

Revelation 1 :5 : And from Jesus Christ, the faithful witness, the firstborn from the dead, and ruler over the kings of the earth.

Rev 3:14 : This is what the Amen, the faithful and true Witness, the Beginning of God’s creation, says.

Rev 6:10 : How long will you, who are the Lord, the Holy One, the True, not do justice and avenge our blood?

Rev 19:11 : Its rider is called Faithful and True, and with justice he judges and makes war.

– Endorsed by the Father and the Spirit of Truth:

Mt 3:17 : And a voice came down from heaven: “Behold my beloved Son, in whom I am well pleased”.

Mt 12:18 : Behold my servant whom I have chosen, my beloved in whom my soul has set all its affection.

Mt 17,5 : Behold my beloved Son, in whom I am well pleased; I heard it.

Jo 5,32.37 : There is another who testifies about me, and I know that the testimony he gives about me is trustworthy.

Jo 8,18 : I bear witness of myself; and my Father, who sent me, gives it too.

Jn 15:26 : When the Paraclete comes […], the Spirit of Truth, who proceeds from the Father, he will bear witness to me.

1Jn 5 :6 : And it is the Spirit who bears witness to him, because the Spirit is the truth.

– What we receive at Baptism:

Jo 14,16-17.26 : It is the Spirit of Truth, which the world cannot receive, because it neither sees nor knows him.

Jn 15:26 : When the Paraclete comes […] the Spirit of Truth, who proceeds from the Father, he will bear witness to me.

Jo 16,7.8-9.13-14 : I tell you the truth: it is to your advantage that I go away! Because if I don’t go, the Paraclete won’t come to you.

1Cor 2,10 : God revealed them to us by his Spirit, because the Spirit penetrates everything, even the depths of God.

1Jn 2,20.27 : I did not write to you as if you were ignorant of the truth, but because you know it.

– Paul writes that Jesus is the yes of God:

Rom 3:3.7 : If some of them were not faithful, will their unfaithfulness destroy God’s faithfulness?

Rom 9:1 : I speak the truth in Jesus Christ, I do not lie; my conscience bears me witness by the Holy Spirit.

Rom 15:8: I assure you that Christ exercised his ministry among the uncircumcised to demonstrate the truthfulness of God.

1Cor 5,8 : Let us therefore celebrate the feast […] with unfermented bread of purity and truth.

2Cor 1,17.19-20 : Or are the resolutions I make purely human, so that there is a “yes” in me and then a “no”?

2Cor 7,14 : Everything we have said to you was […] the truth, […] also the praise […] of Titus proved true.

2Cor 12,6 : Even if I wanted to boast, I would not be foolish, because I would speak the truth.

Eph 4:21 , 25 : If indeed you have heard and learned from him, as is fitting for the truth in Jesus.

Phl 1,18 : As long as in every way, by pretext or by truth, Christ is proclaimed.

1Tm 2,7 : I tell the truth, I do not lie – I was appointed preacher, apostle and teacher of the Gentiles, in faith and in truth.

– This is the truth of the Good News that men must accept for their happiness:

Gal 2,5.14 : We were, for this time, condescending, so that the Gospel remained in its integrity.

Eph 1:13 : In him also you, after you have heard the word of truth, the Gospel of your salvation.

Eph 4:15 : But through the sincere practice of charity, let us grow in every way, in Christ the Head.

Col 1,5-6 : Hope that was transmitted to you by preaching the truth of the Gospel.

2Th 2:10 : He will use all the seductions of evil with those who are lost, for not having cultivated the love of the truth.

1Tm 1,10-11 : […] liars, perjurers and everything that opposes sound doctrine and the glorious Gospel of God.

1Tm 2,4 : Who wants all men to be saved and to come to the knowledge of the truth.

1Tm 3,15 : How should you conduct yourself in the house of God […] the Church of the living God, pillar and support of the truth.

2Tm 2,13.15 : If we are unfaithful… he remains faithful, and cannot be undone.

2Tm3,7: Always learning without ever reaching knowledge of the truth.

2Tm 4,3 : The time will come when men will no longer support the sound doctrine of salvation.

Tit 1,1.9 : Apostle of Jesus Christ to bring faith and a deep knowledge of the truth to God’s elect.

Titus 2: 1 : But let your teaching conform to sound doctrine.