Cried unto the Lord, i.e. prayed fervently for deliverance. Caleb's younger brother; of which See Poole on "Judges 1:13".
Related Commentaries of Judges 3:9
Judges 3:9
9 And when the children of Israel cried unto the LORD, the LORD raised up a delivererb to the children of Israel, who delivered them, even Othniel the son of Kenaz, Caleb's younger brother.