army military war - Why G-d didn't reveal the Israelis a recipe for gunpowder?

I think that would change the balance of power dramatically and ensure fast and effortless conquer of the Promised Land.

For those (interpreters and those of you) who hold that the conquest had to be "natural", by the power of force - battles, and wars, why didn't G-d reveal the secret recipe for gunpowder?

I think in the eyes of the nations that would surely raise the Israelites in the rank of G-d's people.