I  used to go to church camp every summer, the first full week in July. One year, this guy who went to church with me who was in a different class told us something they discussed. It’s been at least a decade. But it (or part) has stuck with me.

The devil can fight
But he can’t win
God’s word
And Jesus’ name my defense
Weapons of warfare
And faith in place
I’ll defeat the devil
By God’s amazing grace
So, if you didn’t hear me
I’ll say it again
The devil can fight
But he can’t win