Can someone be both a priest and a king? A priest makes intercession to God on behalf of the people, and offers sacrifices for the people unto God, a priest keeps the house of God, serves in the house of God, for it is his home. A king is established by God to serve the people, and make decisions for the people, and set himself apart in holiness and lead by the way of righteousness, and lead with boldness, and receive and give in faithfulness. Melchizedek king of Salem leads with faith by speaking in worship to God Most High. Abram responds. And we also see the focus of the king of Sodom.