4 Bible Verses about How God Can't Lie

God is not a man, to say what is false; or the son of man, that his purpose may be changed: what he has said, will he not do? and will he not give effect to the words of his mouth

And further, the Glory of Israel will not say what is false, and his purpose may not be changed: for he is not a man, whose purpose may be changed.

So that we, who have gone in flight from danger to the hope which has been put before us, may have a strong comfort in two unchanging things, in which it is not possible for God to be false;

I have made an oath once by my holy name, that I will not be false to David.