2 Samuel 7:28

And now, Lord Jehovah, thou art the God, and thy words must be true: for thou hast told this goodness unto thy servant.

John 17:17

"Sanctify them with thy truth. Thy saying is truth.

Exodus 34:6

And when the LORD walked before him, he cried, "LORD, LORD God full of compassion and mercy, which art not lightly angry but abundant in mercy and truth,

Numbers 23:19

The Lord God is not a man, that he can lie; neither the son of a man, that he can repent! Should he say, and not do? Or should he speak, and not make it good?

Titus 1:2

which is after godliness upon the hope of eternal life; which life God, that cannot lie, hath promised before the world 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
The Lord God is not a man, that he can lie; neither the son of a man, that he can repent! Should he say, and not do? Or should he speak, and not make it good?
John 17:17
"Sanctify them with thy truth. Thy saying is truth.
Titus 1:2
which is after godliness upon the hope of eternal life; which life God, that cannot lie, hath promised before the world began: