Psalm 89:34 in the World English Bible
I will not break my covenant, nor alter what my lips have uttered.
Context
33 Nevertheless my lovingkindness will I not utterly take from him, nor suffer my faithfulness to fail.
34 My covenant will I not break, nor alter the thing that is gone out of my lips.
35 Once have I sworn by my holiness that I will not lie unto David.