they went. This Ellipsis is wrongly supplied. It should be "from thence toward Beer". No mention is made of Beer in the list of journeys in Numbers 33.
spake. See note on Numbers 1:1.
Related Commentaries of Numbers 21:16
Numbers 21:16
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.