1 Samuel 30:8-10

Revised Standard Version

⁸ And David inquired of the Lord, “Shall I pursue after this band? Shall I overtake them?” He answered him, “Pursue; for you shall surely overtake and shall surely rescue.” ⁹ So David set out, and the six hundred men who were with him, and they came to the brook Besor, where those stayed who were left behind. ¹⁰ But David went on with the pursuit, he and four hundred men; two hundred stayed behind, who were too exhausted to cross the brook Besor.