Exodus 18:12

Sacrifices. Peace-offerings, of which he might partake with the ancients. (Haydock) --- Jethro being a stranger, and a servant of the true God, might perform this duty in person, even though we allow that the priesthood was restrained to the family of Aaron before this time with regard to the Hebrews. (Calmet) --- Before God. St. Augustine, who supposes that the tabernacle was not yet erected, explains this in honour of God: but others, who believe this happened at the close of the year, say that the feast was made before the tabernacle, the house of God. (Menochius)