'Weak' in the Bible

but God chose the foolish things of the world, that he might put to shame them that are wise; and God chose the weak things of the world, that he might put to shame the things that are strong;

We are fools for Christ's sake, but ye are wise in Christ; we are weak, but ye are strong; ye have glory, but we have dishonor.

Howbeit there is not in all men that knowledge: but some, being used until now to the idol, eat as of a thing sacrificed to an idol; and their conscience being weak is defiled.

But take heed lest by any means this liberty of yours become a stumblingblock to the weak.

For if a man see thee who hast knowledge sitting at meat in an idol's temple, will not his conscience, if he is weak, be emboldened to eat things sacrificed to idols?

For through thy knowledge he that is weak perisheth, the brother for whose sake Christ died.

And thus, sinning against the brethren, and wounding their conscience when it is weak, ye sin against Christ.

To the weak I became weak, that I might gain the weak: I am become all things to all men, that I may by all means save some.

For this cause many among you are weak and sickly, and not a few sleep.