Fratricidal

Genesis 27:43

Now therefore, my son, obey my voice; and arise, flee thou to Laban my brother to Haran;

John 15:23

He that hateth me hateth my Father also.

Judges 20:23

(And the children of Israel went up and wept before the LORD until even, and asked counsel of the LORD, saying, Shall I go up again to battle against the children of Benjamin my brother? And the LORD said, Go up against him.)