Psalm 89:34:
My covenant will I not break, nor alter the thing that is gone out of my lips.
See also:
Bible-Believing Churches That Don’t Believe the Bible
How Can I Get Rid of Unbelief?
Objection: We Cannot Demand Healing from God Because God Is Sovereign
Objection: God Sometimes Calls a Saint Home Early Because He Knows People Will Get Saved at the Funeral
Objection: We Should Pray for Others in Faith, Expecting That God Will Heal Them, Then Leave the Matter in God’s Hands