'Limits' in the Bible

"Can you fathom the mystery of God? Or can you probe the limits of the Almighty?

Their eyes bulge with fat. Their minds pass the limits of conceit.

But we will not boast beyond proper limits, but within the boundaries with which God appointed to us, which reach even to you.

not boasting beyond proper limits in other men's labors, but having hope that as your faith grows, we will be abundantly enlarged by you in our sphere of influence,