John Gill Commentary Ezekiel 48:6

"And by the border of Ephraim, from the east side even unto the west side, Reuben, one [portion]." — Ezekiel 48:6 (ASV)

And by the border of Ephraim, from the east side unto the west
side, a portion for Reuben .
] Who, through his sin, lost his birthright; but now, his sin being forgiven and forgotten, has a portion assigned him upon the border of Ephraim, and next to the tribe of Judah; when in Moses and Joshua's time it lay on the other side Jordan: this points to such persons that shall have their lot and portion in spiritual things; that "see the Son", that look to Christ alone for righteousness, peace, pardon, and eternal life.