John Wesley on Hebrews 3:1

The heavenly calling - God calls from heaven, and to heaven, by the gospel. Consider the Apostle - The messenger of God, who pleads the cause of God with us. And High Priest - Who pleads our cause with God. Both are contained in the one word Mediator. He compares Christ, as an Apostle, with Moses; as a Priest, with Aaron. Both these offices, which Moses and Aaron severally bore, he bears together, and far more eminently. Of our profession - The religion we profess.