Psalms 89:35

Once have I sworn by my holiness that I will not lie unto David.
— Psalms 89:35, King James Version

In other translations

World English Bible (WEB)

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

American Standard Version (ASV)

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

Young's Literal Translation (YLT)

Once I have sworn by My holiness, I lie not to David,