'Believe' in the Bible

In whom the god of this world hath blinded the minds of them which believe not, lest the light of the glorious gospel of Christ, who is the image of God, should shine unto them.

We having the same spirit of faith, according as it is written, I believed, and therefore have I spoken; we also believe, and therefore speak;

Do not become partners with those who do not believe, for what partnership is there between righteousness and lawlessness, or what fellowship does light have with darkness?