2 Samuel 7:28

And now, O Lord Jehovah, thou art God, and thy words are truth, and thou hast promised this good thing unto thy servant:

John 17:17

Sanctify them in the truth: thy word is truth.

Exodus 34:6

And Jehovah passed by before him, and proclaimed, Jehovah, Jehovah, a God merciful and gracious, slow to anger, and abundant in lovingkindness and truth,

Numbers 23:19

God is not a man, that he should lie, Neither the son of man, that he should repent: Hath he said, and will he not do it? Or hath he spoken, and will he not make it good?

Titus 1:2

in hope of eternal life, which God, who cannot lie, promised before times eternal;

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, Neither the son of man, that he should repent: Hath he said, and will he not do it? Or hath he spoken, and will he not make it good?
John 17:17
Sanctify them in the truth: thy word is truth.
Titus 1:2
in hope of eternal life, which God, who cannot lie, promised before times eternal;

American Standard Version Public Domain