Judges 3:2

MKJV⁽ⁱ⁾ ² only that the generations of the sons of Israel might know, to teach them war, at the least those who before knew nothing of it:

Online Parallel Study Bible

might know.
Genesis 2:17; Genesis 3:5; Genesis 3:7; 2 Chronicles 12:8; Matthew 10:34-39; John 16:33; 1 Corinthians 9:26; 1 Corinthians 9:27
Ephesians 6:11-18; 1 Timothy 6:12; 2 Timothy 2:3; 2 Timothy 4:7
to teach.Their fathers fought by a divine power. God taught their hands to war and their fingers to fight, that they might be the instruments of destruction to the wicked nations on whom the curse rested; but now that they had forfeited His favour, they must learn what it is to fight like other men.