Aaron, his sons, and the generations of Levites that would serve the Lord in sacrificial service were uniquely called and set apart by God to God’s service. All of Leviticus 21 contains specific instruction for the life details of sanctification that were called upon by those in God’s service in this way. The list is long. The reason is stated in this one verse: “for I, the LORD, who sanctify you, am holy”.
I extrapolate a simple principle to think through this morning: God deserves to be served for Who He is. And because the defining characteristic of God is His holiness, and that is what He desires to achieve in us, it would follow that those who serve Him must concentrate on recognizing His holiness. They should be the first to be set apart to Him. They should be willing to be His completely. Holiness is not so much about haircuts or clothing styles as it is about the character of God coming through the person of the servant set apart to Him.
God sanctifies me (and really all Christians) to His service. He has set His seal upon us in the form of His Holy Spirit Who resides within us. He has equipped up with gifts and a calling to share the gospel with our lives. We are called a “peculiar” people, and in a sense we are all to live out the holy calling as Christ’s ambassadors. Could there be any more important task?