'Weak' in the Bible

because it is said, "His letters [are] severe and powerful, but his bodily presence [is] weak and his speech is of no account."

I say [this] to [my] shame, namely, that we have been weak. But in whatever anyone dares to [boast]--I am speaking in foolishness--I also dare to [boast].

Who is weak, and [I am] not weak? Who is caused to sin, and I do not burn [with indignation]?

Therefore I delight in weaknesses, in insults, in calamities, in persecutions and difficulties for the sake of Christ, for whenever I am weak, then I am strong.

since you are demanding proof that Christ, who [is] not weak toward you, but is powerful among you, is speaking in me.

For indeed, he was crucified because of weakness, but he lives because of the power of God. For we also are weak in him, but we will live together with him because of the power of God toward you.

For we rejoice whenever we are weak, but you are strong, and we pray for this: your maturity.