Numbers 23:19 God is not a man, that he should lie; neither the son of man, that he should repent: hath he said, and shall he not do it? or hath he spoken, and shall he not make it good?

1 Samuel 15:29 And also the Strength of Israel will not lie nor repent: for he is not a man, that he should repent.

Romans 9:6 Not as though the word of God hath taken none effect. For they are not all Israel, which are of Israel:

Romans 10:16 But they have not all obeyed the gospel. For Esaias saith, Lord, who hath believed our report?

Romans 11:29 For the gifts and calling of God are without repentance.

2 Timothy 2:13 If we believe not, yet he abideth faithful: he cannot deny himself.

Hebrews 4:2 For unto us was the gospel preached, as well as unto them: but the word preached did not profit them, not being mixed with faith in them that heard it.