“Doom to those who go off to Egypt thinking that horses can help them, Impressed by military mathematics, awed by sheer numbers of chariots and riders— And to The Holy of Israel, not even a glance, not so much as a prayer to God.” (Isaiah 31:1, The Message)
Mathematics in the kingdom of God and that in the world are radically different. God + anything = victory in the kingdom of God. The world, on the other hand says, "he who is strongest wins."
Here Isaiah calls out those Israelites who, when threatened by Assyria, rather than rely upon God, they turned to Egypt for help because they were using worldly mathematics; they were awed by sheer numbers of chariots and riders. They should have relied upon God because God + anything = victory.
While we don't live in a theocracy, we do often struggle with the same sort of attitudes. It is much easier for us to rely upon our own wits or finances or brains, than it is to be dependent upon our God.