'Weak' in the Bible

He lifts the weak from the dust; he raises the poor from the ash heap to seat them with princes and to bestow on them an honored position. The foundations of the earth belong to the Lord, and he has placed the world on them.

{And then} one day when Eli was lying in his place (now his eyes had begun [to grow] weak so that he was not able to see)

And Saul and the people spared Agag, and the best of the sheep and oxen, and beasts of the second bearing, and the lambs, and all that was good, and would not devote them to destruction; but everything that was mean and weak, that they destroyed utterly.

Immediately, Saul fell flat on the ground. He was terrified by Samuel’s words and was also weak because he hadn’t had any food all day and all night.