1 Samuel 16:2

Of the herd. Hebrew, "a heifer in thy hand." (Haydock) --- Females might be employed as peace-offerings, Leviticus iii. 1. --- Lord. This was one, though not the principal reason. No one doubted but that he might lawfully offer sacrifice, at a distance from the tabernacle, as he was guided by God. The Jews allow that prophets have this privilege, and may dispense with the ceremonial law, (Grotius) when they act by God's authority, as we ought to believe they do, as long as there is no proof to the contrary. (Haydock)