2 Samuel 7:28

And now, Lord Jehovah, thou art that God, and thy words are true, and thou hast promised this goodness unto thy servant;

John 17:17

Sanctify them by the truth: thy word is truth.

Exodus 34:6

And Jehovah passed by before his face, and proclaimed, Jehovah, Jehovah God merciful and gracious, slow to anger, and abundant in goodness and truth,

Numbers 23:19

God is not a man, that he should lie; neither a son of man, that he should repent. Shall he say and not do? and shall he speak and not make it good?

Titus 1:2

in the hope of eternal life, which God, who cannot lie, promised before the ages of time,

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 a son of man, that he should repent. Shall he say and not do? and shall he speak and not make it good?
John 17:17
Sanctify them by the truth: thy word is truth.
Titus 1:2
in the hope of eternal life, which God, who cannot lie, promised before the ages of time,