'Weak' in the Bible

and not being weak in faith, he considered not his own body already become dead, being about a hundred years old, and the deadening of Sarah's womb,

For what the law could not do, in that it was weak through the flesh, God, having sent his own Son, in likeness of flesh of sin, and for sin, has condemned sin in the flesh,

Now him that is weak in the faith receive, not to the determining of questions of reasoning.

One man is assured that he may eat all things; but the weak eats herbs.

It is right not to eat meat, nor drink wine, nor do anything in which thy brother stumbles, or is offended, or is weak.

But we ought, we that are strong, to bear the infirmities of the weak, and not to please ourselves.