Passage
Which they left and encamped over against Arnon, which is in the desert and standeth out on the borders of the Amorrhite. For Arnon is the border of Moab, dividing the Moabites and the Amorrhites.
Which they left and encamped over against Arnon, which is in the desert and standeth out on the borders of the Amorrhite. For Arnon is the border of Moab, dividing the Moabites and the Amorrhites.
Numbers 21:11 And departing thence they pitched their tents in Jeabarim, in the wilderness, that faceth Moab toward the east.
Numbers 21:12 And removing from thence, they came to the torrent Zared:
Numbers 21:13 Which they left and encamped over against Arnon, which is in the desert and standeth out on the borders of the Amorrhite. For Arnon is the border of Moab, dividing the Moabites and the Amorrhites.
Numbers 21:14 Wherefore it is said in the book of the wars of the Lord: As he did in the Red Sea, so will he do in the streams of Arnon.
Numbers 21:15 The rocks of the torrents were bowed down that they might rest in Ar, and lie down in the borders of the Moabites.
The verse centers on "left", "encamped", "over", "against", "arnon", "desert", "standeth", and "borders". It is saying that the verse draws attention to "left" and "encamped", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 12's "And removing from thence they came to..." into verse 14's "Wherefore it is said in the book...", so "left" and "encamped" belong inside that flow. In Numbers context, the local focus is covenant, worship, and faithfulness.
A plain takeaway is to answer the verse's own emphasis on "left" and "encamped" with trust shaped by these words, not by a vague optimism outside the passage.