'Forth' in the Bible

but David went back and forth from Saul to tend his father’s flock at Bethlehem.

And the king said to the guards who were attending him, “Turn around and put the priests of the Lord to death, because their hand also is with David and because they knew that he was fleeing and did not reveal it to me.” But the servants of the king were not willing to put forth their hands to attack the priests of the Lord.

As the proverb of the ancients says, ‘Out of the wicked comes forth wickedness’; but my hand shall not be against you.