Numbers 33:7
“And they removed from Etham, and turned again unto Pi–hahiroth, which is before Baal–zephon: and they pitched before Migdol.”
And the children of Israel removed from Rameses, and pitched in Succoth.
And they departed from Succoth, and pitched in Etham, which is in the edge of the wilderness.
And they removed from Etham, and turned again unto Pi–hahiroth, which is before Baal–zephon: and they pitched before Migdol.
And they departed from before Pi–hahiroth, and passed through the midst of the sea into the wilderness, and went three days’ journey in the wilderness of Etham, and pitched in Marah.
And they removed from Marah, and came unto Elim: and in Elim were twelve fountains of water, and threescore and ten palm trees; and they pitched there.
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Cross-References
“Speak unto the children of Israel, that they turn and encamp before Pi–hahiroth, between Migdol and the sea, over against Baal–zephon: before it shall ye encamp by the sea.”
“But the Egyptians pursued after them, all the horses and chariots of Pharaoh, and his horsemen, and his army, and overtook them encamping by the sea, beside Pi–hahiroth, before Baal–zephon.”
“Speak unto the children of Israel, that they turn and encamp before Pi–hahiroth, between Migdol and the sea, over against Baal–zephon: before it shall ye encamp by the sea.”
“And they departed from before Pi–hahiroth, and passed through the midst of the sea into the wilderness, and went three days’ journey in the wilderness of Etham, and pitched in Marah.”