Gen 14:14
And when Abram heard that his brother was taken captive, he armed his trained
servants, born in his own house, three hundred and eighteen, and pursued
them unto Dan.
Gen 14:15
And he divided himself against them, he and his servants, by night, and smote them, and pursued them unto Hobah, which
is on the left hand of Damascus.
Gen 14:16
And he brought back all the goods, and also brought again his brother Lot, and his goods, and the women also, and the people.
Gen 14:18
And Melchizedek king of Salem brought forth bread and wine: and he
was the priest of the most high God.
Gen 14:19
And he blessed him, and said, Blessed
be Abram of the most high God, possessor of heaven and earth:
Gen 14:20
And blessed be the most high God, which hath delivered thine enemies into thy hand. And he gave him tithes of all.
Gal 3:7
Know ye therefore that they which are of faith, the same are the children of Abraham.
If it's ok for Abram to save his family, even to the point of going to war, then I believe the same applies to the children of Abraham.
There is a difference between physical warfare and spiritual warfare. The NT is concerned with the Spirit.
That doesn't negate the fact that sometimes you have to go to war to save the ones you love.
Right Abraham?