1 Samuel 17:15

But David went and returned from Saul to feed his father’s sheep at Bethlehem.
— 1 Samuel 17:15, King James Version

In other translations

World English Bible (WEB)

Now David went back and forth from Saul to feed his father's sheep at Beth-lehem.

American Standard Version (ASV)

Now David went to and fro from Saul to feed his father’s sheep at Beth-lehem.

Young's Literal Translation (YLT)

and David is going and returning from Saul, to feed the flock of his father at Beth-Lehem.