John Gill Commentary Ezekiel 47:17

"And the border from the sea, shall be Hazar-enon at the border of Damascus; and on the north northward is the border of Hamath. This is the north side." — Ezekiel 47:17 (ASV)

And the border from the sea shall be Hazarenan, the border of
Damascus
Which was the furthermost part and end of the northern border, as fixed by Moses, (Numbers 34:9) : and the north northward, and the border of Hamath ;
if this is carrying on the border further, it seems to be another Hamath, distinct from the former, (Ezekiel 47:16) , and this is the north side :
of the land, and the description of the northern border of it, from the Mediterranean sea to Hazarenan.