Journey of Israel Through The Desert: Through the Wilderness of Shur or Etham
Source: TTT
Exodus 15:22
Then Moses led Israel from the Red Sea, and they went out into the Desert of Shur. For three days they walked in the desert without finding water.
Numbers 33:8
They set out from Pi-hahiroth and crossed through the sea, into the wilderness, and they journeyed three days into the Wilderness of Etham and camped at Marah.