Numbers 21:16 in the World English Bible
From there they traveled to Beer; that is the well of which the LORD said to Moses, “Gather the people together, and I will give them water.”
Context
15 And at the stream of the brooks that goeth down to the dwelling of Ar, and lieth upon the border of Moab.
16 And from thence they went to Beer: that is the well whereof the LORD spake unto Moses, Gather the people together, and I will give them water.
17 Then Israel sang this song, Spring up, O well; sing ye unto it: