'Weakness' in the Bible

He is able to deal gently with the spiritually ignorant and misguided, since he is also subject to human weakness;

For, on the one hand, a former commandment is cancelled because of its weakness and uselessness [because of its inability to justify the sinner before God]

For the Law appoints men as high priests who are weak [frail, sinful, dying men], but the word of the oath [of God], which came after [the institution of] the Law, permanently appoints [as priest] a Son who has been made perfect forever.

extinguished the power of [raging] fire, escaped the edge of the sword, out of weakness were made strong, became mighty and unbeatable in battle, putting enemy forces to flight.