'Unbelieving' in the Bible

But the unbelieving Jews stirred up the Gentiles, and made their minds evil affected against the brethren.

And the unbelieving Jews, having been moved with envy, and having taken to them of the loungers certain evil men, and having made a crowd, were setting the city in an uproar; having assailed also the house of Jason, they were seeking them to bring them to the populace,

But when some were becoming hardened and disobedient [to the word of God], discrediting and speaking evil of the Way (Jesus, Christianity) before the congregation, Paul left them, taking the disciples with him, and went on holding daily discussions in the lecture hall of Tyrannus [instead of in the synagogue].