2 Samuel 7:28

"Now, O Lord Yahweh, you are God, and your words are truth, and you have promised this good thing to your servant.

John 17:17

Sanctify them in your truth. Your word is truth.

Exodus 34:6

Yahweh passed by before him, and proclaimed, "Yahweh! Yahweh, a merciful and gracious God, slow to anger, and abundant in loving kindness and truth,

Numbers 23:19

God is not a man, that he should lie, nor the son of man, that he should repent. Has he said, and will he not do it? Or has he spoken, and will he not make it good?

Titus 1:2

in hope of eternal life, which God, who can't lie, promised before time began;

Treasury of Scripture Knowledge

Summary

And now, O Lord GOD, thou art that God, and thy words be true, and thou hast promised this goodness unto thy servant:

Bible References

Thy words

Numbers 23:19
God is not a man, that he should lie, nor the son of man, that he should repent. Has he said, and will he not do it? Or has he spoken, and will he not make it good?
John 17:17
Sanctify them in your truth. Your word is truth.
Titus 1:2
in hope of eternal life, which God, who can't lie, promised before time began;