On a side note, yes we can look at Acts, and ask why they didn't do this or that. But Acts isn't the only book in the Bible. Let's keep in mind the whole/full counsel of God's word.
i do agree there is always the entire rest of the bible to follow,,,that is lot,and his women,servants,friends,ect were carried away by certain kings,,in a "violent act",,,Abraham,318 of those circumcised,and other kings went to protect lot and his family,(from the booger man),,,and Melchizedek met him after he returned from defending the women,children ect. from the face of the same danger we are facing,,,,"and no one thinks him a gun toting eccentric",,,
there is nehemiah,4;13-14,,,exodus 22,2-3,,,,psalms 144;1,,,Luke 22;36,,,proverbs 25;26,,,romans 13;4,,,1 tim.5;8,,,psalm 82;4,,,proverbs 24;11,,,ezekiel 33;6,,,,and many others explaining that a godly man will protect his family,,,but whose' counting???