2 Timothy 2:13
"If we believe not, yet he abideth faithful: he cannot deny himself."
Cross References (ranked by relevance)
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?
For what if some did not believe? shall their unbelief make the faith of God without effect?
But the Lord is faithful, who shall stablish you, and keep you from evil.
In hope of eternal life, which God, that cannot lie, promised before the world began;
Faithful is he that calleth you, who also will do it.
God is faithful, by whom ye were called unto the fellowship of his Son Jesus Christ our Lord.
That by two immutable things, in which it was impossible for God to lie, we might have a strong consolation, who have fled for refuge to lay hold upon the hope set before us:
Heaven and earth shall pass away, but my words shall not pass away.
Not as though the word of God hath taken none effect. For they are not all Israel, which are of Israel:
O Lord, thou art my God; I will exalt thee, I will praise thy name; for thou hast done wonderful things; thy counsels of old are faithfulness and truth.