Psalm 89:35

Once I have sworn by my holiness, 'I will surely not lie to David,

Amos 4:2

My Lord Yahweh has sworn by his holiness that, "Behold, the days are coming upon you {when they} will take you away with hooks, even the last of you with fishing hooks.

Psalm 110:4

Yahweh has sworn and he will not change [his mind], "You [are] a priest forever according to the manner of Melchizedek."

Psalm 132:11

Yahweh swore [in] truth to David; he will not turn back from it. "One from the fruit of your {body} I will set on your throne.

Amos 8:7

Yahweh has sworn by the pride of Jacob, "Surely I will never forget any of their deeds!

2 Thessalonians 2:13

But we ought to give thanks to God always concerning you, brothers [dearly] loved by the Lord, because God has chosen you [as] first fruits for salvation by the sanctification of the Spirit and faith in the truth,

Titus 1:2

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

Hebrews 6:13

For [when] God made a promise to Abraham, since he had no one greater to swear by, he swore by himself,

Hebrews 6:17

In the same way God, [because he] wanted to show even more to the heirs of the promise the unchangeableness of his resolve, guaranteed [it] with an oath,

Treasury of Scripture Knowledge

Summary

Once have I sworn by my holiness that I will not lie unto David.

That i will not lie

Bible References

Once

Psalm 110:4
Yahweh has sworn and he will not change [his mind], "You [are] a priest forever according to the manner of Melchizedek."
Psalm 132:11
Yahweh swore [in] truth to David; he will not turn back from it. "One from the fruit of your {body} I will set on your throne.
Amos 4:2
My Lord Yahweh has sworn by his holiness that, "Behold, the days are coming upon you {when they} will take you away with hooks, even the last of you with fishing hooks.
Amos 8:7
Yahweh has sworn by the pride of Jacob, "Surely I will never forget any of their deeds!
Hebrews 6:13
For [when] God made a promise to Abraham, since he had no one greater to swear by, he swore by himself,

That i will not lie

2 Thessalonians 2:13
But we ought to give thanks to God always concerning you, brothers [dearly] loved by the Lord, because God has chosen you [as] first fruits for salvation by the sanctification of the Spirit and faith in the truth,
Titus 1:2
in the hope of eternal life which God, who does not lie, promised before eternal ages,