Meanings of weak beings in English

Surely these weak beings are only fit for the seraglio!

He excused the hypocrisy of these weak beings, who accepted baptism only externally and in their hearts remained Jews.

Assembling all his forces, he created such a turmoil in the lower air that these two weak beings were terrified.

His character exhibited contradictions that were often inexplicable; he was jealous, like all weak beings, but his confidence in his wife's sanctity was boundless.