I remember an activity in which I was several years ago, the person I was preaching said: “If you are weak, this place is not for you, you can leave”. I heared these words with indignation, because it is too arrogant to see how people think they are strong and that others are weak.
Being weak in the spiritual sense has a great advantage and that weakness leads us not to depend on ourselves or our own forces for battle, but on the forces of someone much more superior: Jesus Christ.
The Bible says:
Beat your plowshares into swords and your pruninghooks into spears: let the weak say, I am strong.
The understanding of Joel 3:10 is wrong here.
This verse refers to the enemies of God taking arms and going against God, believing in their own abilities that they can defeat God