'Thinks' in the Bible

So be careful how you listen; for whoever has [a teachable heart], to him more [understanding] will be given; and whoever does not have [a longing for truth], even what he thinks he has will be taken away from him.”

I know and am convinced [as one] in the Lord Jesus that nothing is unclean [ritually defiled, and unholy] in itself; but [nonetheless] it is unclean to anyone who thinks it is unclean.

But if any man thinks that he is not acting properly and honorably toward his virgin daughter, [by not permitting her to marry], if she is past her youth, and it must be so, let him do as he wishes, he does not sin; let her marry.

Therefore let the one who thinks he stands firm [immune to temptation, being overconfident and self-righteous], take care that he does not fall [into sin and condemnation].

If anyone thinks and claims that he is a prophet [a true spokesman for God] or spiritually astute [filled with and energized by the Holy Spirit], let him recognize that the things which I write to you are the Lord’s commandment.

For if anyone thinks he is something [special] when [in fact] he is nothing [special except in his own eyes], he deceives himself.

being a double-minded man, unstable and restless in all his ways [in everything he thinks, feels, or decides].

If anyone thinks himself to be religious [scrupulously observant of the rituals of his faith], and does not control his tongue but deludes his own heart, this person’s religion is worthless (futile, barren).