'Infirm' in the Bible

but see, lest this privilege of yours may become a stumbling-block to the infirm,

for if any one may see thee that hast knowledge in an idol's temple reclining at meat -- shall not his conscience -- he being infirm -- be emboldened to eat the things sacrificed to idols,

and the brother who is infirm shall perish by thy knowledge, because of whom Christ died?

I became to the infirm as infirm, that the infirm I might gain; to all men I have become all things, that by all means I may save some.

On this account many among you are weak and infirm, and a good many are fallen asleep.

But much more the members of the body which seem to be more infirm are necessary,