Benaiah the son of Jehoiada, the son of a valiant man of Kabzeel, who had done mighty deeds, he killed the two [sons of] Ariel of Moab: he went down also and killed a lion in the midst of a pit in time of snow.
And so he poured the water out on the ground because he just felt unworthy to drink that water. He felt that those guys that were willing to hazard their lives for a thing like that better that they give it to the Lord. So he poured it out to the Lord, verse eighteen.