'Weak' in the Bible

All of them answer and say unto thee, Even thou hast become weak like us! Unto us thou hast become like!

And they have turned away the flowings, Weak and dried up have been brooks of the bulwark, Reed and flag have withered.

Tread it down doth a foot, Feet of the poor -- steps of the weak.

He doth not become weak nor bruised, Till he setteth judgment in the earth, And for his law isles wait with hope.