2 Samuel 7:28

Now, my Lord Yahweh, you alone [are] God, and your words [are] true. You have promised this good to your servant.

John 17:17

Sanctify them in the truth--your word is truth.

Exodus 34:6

And Yahweh passed over before him, and he proclaimed, "Yahweh, Yahweh, God, [who is] compassionate and gracious, {slow to anger}, and abounding with loyal love and faithfulness,

Numbers 23:19

God [is] not a man, that he should lie, nor a son of humankind, that he should change his mind. Has he said, and will he not do [it]? And has he spoken, and will he not fulfill it

Titus 1:2

in the hope of eternal life which God, who does not lie, promised before eternal ages,

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 a son of humankind, that he should change his mind. Has he said, and will he not do [it]? And has he spoken, and will he not fulfill it
John 17:17
Sanctify them in the truth--your word is truth.
Titus 1:2
in the hope of eternal life which God, who does not lie, promised before eternal ages,