1 Samuel 30:6-9

6David was very upset because his men were complaining. They wanted to kill him with stones. His men were very upset because they had lost their sons and their daughters. But David trusted the Lord his God to make him strong.

7Then David spoke to Abiathar the priest, Ahimelech's son. David said to him, ‘Bring the priests' ephod to me.’ So Abiathar took the ephod to David.

8David asked the Lord, ‘Should I chase after the men who attacked our town? Will I catch them?’ The Lord answered, ‘Yes, chase after them and you will certainly catch them. You will rescue your families.’

9So David and his 600 men left Ziklag. They arrived at Besor stream. Some of the men were too tired to go across the valley. So 200 men remained there. David and the other 400 men continued to chase after the Amalekites.