Numbers 23:19

23:19 God is not a man, that he should lie,

nor a human being, that he should change his mind.

Has he said, and will he not do it?

Or has he spoken, and will he not make it happen?

Titus 1:2

1:2 in hope of eternal life, which God, who does not lie, promised before the ages began.

Hebrews 6:18

6:18 so that we who have found refuge in him may find strong encouragement to hold fast to the hope set before us through two unchangeable things, since it is impossible for God to lie.