It matters not whether they were the first-born, or others; it is sufficient that they were persons appointed and authorized for the present service, not without God’s direction.
Peace-offerings of oxen; one kind, as the principal is named for all; for there were offered also goats, as appears both from Heb_9:19, and from hence, that burnt-offerings were usually made of the goats, Lev_1:10Num_7:28.