Numbers 21:16-18

LXX2012(i) 16 And thence [they came to] the well; this [is] the well of which the Lord said to Moses, Gather the people, and I will give them water to drink. 17 Then Israel sang this song at the well, Begin [to sing] of the well; 18 the princes digged it, the kings of the nations in their kingdom, in their lordship sank it in the rock: and [they went] from the well to Manthanain,