From what I have seen of Krav Maga, it is very much Go Ju Ru with the main difference being the end result.....my training was to incapacitate.....Krav Maga uses my same techniques but to kill instead....both are extremely effective.
But if we walk in the light, as He is in the light, we have fellowship with one another, and the blood of Jesus, His Son, purifies us from all sin.