What does 2 Samuel 23:16 mean?

So the three warriors broke through the Philistine lines, drew water from the well by the gate in Bethlehem, and brought it back to David. But he refused to drink it. Instead, he poured it out as an offering to the Lord. 2 Samuel 23:16 - Modern Text Bible

(The three men risked their lives to get David the water he wanted, but David felt it was too precious to drink and gave it to God instead.)