'Back' in the Bible

Then it happened when Saul turned his back to leave Samuel, God changed his heart; and all those signs came to pass that day.

So they inquired further of the Lord, “Has the man come here yet?” And the Lord answered, “He is there, hiding himself by the provisions and supplies.”

“I regret that I made Saul king, for he has turned away from following Me and has not carried out My commands.” Samuel was angry [over Saul’s failure] and he cried out to the Lord all night.

Now, please, pardon my sin and return with me, so that I may worship the Lord.”

So Samuel went back following Saul, and Saul worshiped the Lord.

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

So look, and take note of all the places where he hides and come back to me with the established facts, then I will go with you. If he is [anywhere] in the land, I will search him out among all the thousands of Judah.”