Ministered, i.e. performed his ministration carefully and faithfully, not corrupting nor abusing it, as Eli’s sons did.
Before the Lord; in God’s tabernacle; or as in God’s presence, sincerely and regardarly, with God’s approbation.
Compare Gen_17:12Ch_26:4.
A linen ephod; a garment used in God’s service, and allowed not only to the inferior priests and Levites, but also to eminent persons of the people, as 2Sa_6:11, and therefore to Samuel, who, though no Levite, was a Nazarite, and that from his birth.