John Gill Commentary Exodus 12:45

"A sojourner and a hired servant shall not eat thereof." — Exodus 12:45 (ASV)

A foreigner and an hired servant shall not eat thereof . ] One of another nation, and one that was only hired by the day, week, or year; as they were not obliged to circumcision, so without it they had no right to eat of the passover, none but such as became proselytes of righteousness.