Probably from H853 or H854 and H4136; heretofore; definitely yesterday: - + before (that) {time} + {heretofore} of late ({old}) + times {past} yester[day].
Verse
Matrix
Exo 13:20¶ And they took their journey from Succoth, and encamped in EthamH864, in the edge of the wilderness.
Num 33:8And 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 EthamH864, and pitched in Marah.