1 Chronicles 17:26

And now, O Lord, You are God, and you have spoken and promised this good thing to Your servant.

Exodus 34:6-7

Then the Lord passed by in front of him, and proclaimed, “The Lord, the Lord God, compassionate and gracious, slow to anger, and abounding in lovingkindness and truth (faithfulness);

Titus 1:2

based on the hope and divine guarantee of eternal life, [the life] which God, who is ever truthful and without deceit, promised before the ages of time began,

Hebrews 6:18

so that by two unchangeable things [His promise and His oath] in which it is impossible for God to lie, we who have fled [to Him] for refuge would have strong encouragement and indwelling strength to hold tightly to the hope set before us.

Treasury of Scripture Knowledge

Summary

And now, LORD, thou art God, and hast promised this goodness unto thy servant:

Bible References

Thou art god

Exodus 34:6
Then the Lord passed by in front of him, and proclaimed, “The Lord, the Lord God, compassionate and gracious, slow to anger, and abounding in lovingkindness and truth (faithfulness);
Titus 1:2
based on the hope and divine guarantee of eternal life, [the life] which God, who is ever truthful and without deceit, promised before the ages of time began,
Hebrews 6:18
so that by two unchangeable things [His promise and His oath] in which it is impossible for God to lie, we who have fled [to Him] for refuge would have strong encouragement and indwelling strength to hold tightly to the hope set before us.