John Gill Commentary Ezekiel 47:20

"And the west side shall be the great sea, from the [south] border as far as over against the entrance of Hamath. This is the west side." — Ezekiel 47:20 (ASV)

The west side also shall be the great sea from the border
From the border of Egypt, and the river of it, to the Mediterranean sea, is the west side of the land, and the western border of it; hence the western point is often expressed in Scripture by the sea: till a man come over against Hamath ;
Antioch in Syria; see (Ezekiel 47:16) this is the west side ;
of the land, and of the western border of it.