The way we win is with the divine weapons of the cross: absorbing blows, dying, not by fighting, killing, retaliating or revenge. 2 Cor 10:1-5; Luke 9:56; Matt 26:52; Matt 5:38-48. Carnal weapons vs Divine weapons Paul the violent zealot became a humble dying submissive servant. Somewhat repetitive but very important.
A corollary to this is a truth stated by Jesus in Lk 11:17-18. A kingdom divided against itself is brought to desolation. God does not destroy evil. He allows evil to divide against itself at the cross. Satan killed Jesus and thereby detroyed his own kingdom.
Paul, before the revelation, was a violent zealot in the mold of Phineas ( Num 25:6-9; Ps 106:29-30). After the revelation he was no longer a violent legalist killer; he was an absorber of blows; an unconditional lover and a daily dier. Satan is a killer. Heb 2:14. God is a life-giving Spirit. 1 Cor 15:45.