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2 Samuel 23:16ESV·author unknown

Then the three mighty men broke through the camp of the Philistines and drew water out of the well of Bethlehem that was by the gate and carried and brought it to David. But he would not drink of it. He poured it out to the LORD

John Gill Reformed Baptist @doctorgill

And the three mighty men brake through the host of the Philistines,.... Which lay in the valley of Rephaim, between the hold in which David was and the well of Bethlehem; these three men hearing David express himself in the above manner, though without any view that any should risk their lives to obtain it, only in a general way said, oh for a draught...

Geneva Bible Notes Reformed @genevanotes

And the three mighty men brake through the host of the Philistines, and drew water out of the well of Bethlehem, that [was] by the gate, and took [it], and brought [it] to David: nevertheless he would not drink thereof, but poured it out unto the LORD. (k) Bridling his affection, and also desiring God not to be offended for that rash enterprise.

Adam Clarke Methodist @methodicalclarke

Poured it out unto the Lord - To make libations, both of water and wine, was a frequent custom among the heathens. We have an almost similar account in Arrian's Life of Alexander: "When his army was greatly oppressed with heat and thirst, a soldier brought him a cup of water; he ordered it to be carried back, saying, I cannot bear to drink alone...