1st London Confession of Faith:
X. Touching His office, Jesus Christ onely is made the Mediator of the new Covenant, even the everlasting Covenant of grace between God and man, to be perfectly and fully the Prophet, Priest and King of the Church of God for evermore.
XI. Unto this office hee was fore-ordained from everlasting, by the authority of the Father, and in respect of his Manhood, from the womb called and separated, and anointed also most fully and abundantly with all gifts necessary, God having without measure poured the Spirit upon him.
XII. In this Call the Scripture hold forth two speciall things considerable; first, the call to the Office; secondly the office it self. First, that none takes this honour but he that is called of God, as was Aaron, so also Christ, it being an action especially of God the Father, whereby a special covenant being made, hee ordains his Sonne to this office: which Covenant is, that Christ should be made a Sacrifice for sinne, that hee shall see his seed, and prolong his days, and the pleasure of the Lord shall prosper in his hand; which calling therefore contains in it self chusing, fore-ordaining, sending. Chusing respects the end, fore-ordaining the means, sending the execution it self, all of meere grace, without any condition fore-seen either in men, or in Christ himself.
XIII. So that this Office to be Mediator, that is, to be Prophet, Priest, and King of the Church of God, is so proper to Christ, as neither in the whole, not in any part thereof, it can be transferred from him to any other.
XIV. This office it self to which Christ was called, is three fold, of a Prophet, of Priest, and of King: this number and order of offices is showed; first by mens necessities grievously laboring under ignorance, by reason whereof they stand in infinite necessity of the Prophetical office of Christ to relieve them. Secondly, alienation from God, wherein they stand in need of the Priestly office to reconcile them. Thirdly, our utter disability to return to Him, by which they stand in need of the power of Christ in His Kingly office to assist and govern them.
XIX. Touching His Kingdom, Christ being risen from the dead, ascended into Heaven, sat on the right hand of God the Father, having all power in Heaven and earth, given unto Him, He does spiritually govern His Church, exercising His power over all angels and men, good and bad, to the preservation and salvation of the elect, to the over-ruling and destruction of His enemies, which are reprobates, communicating and applying the benefits, virtue, and fruit of His Prophecy and Priesthood to His elect, namely, to the subduing and taking away of their sins, to their justification and adoption of Sons, regeneration, sanctification, preservation and strengthening in all their conflicts against Satan, the World, the Flesh, and the temptations of them, continually dwelling in, governing and keeping their hearts in faith and filial fear by His Spirit, which having given it, He never takes it away from them, but by it still begets and nourishes in them faith, repentance, love, joy, hope, and all heavenly light in the soul unto immortality, notwithstanding through our own unbelief, and the temptations of Satan, the sensible sight of this light and love be clouded and overwhelmed for the time. And on the contrary, ruling in the world over His enemies, Satan, and all the vessels of wrath, limiting, using, restraining them by His mighty power, as seems good in His divine wisdom and justice to the execution of His determinate counsel, delivering them up to a reprobate mind, to be kept through their own deserts, in darkness and sensuality unto judgment.
XX. This Kingdom shall be then fully perfected when He shall the second time come in glory to reign among His saints, and to be admired of all them which do believe, when He shall put down all rule and authority under His feet, that the glory of the Father my be full and perfectly manifested in His Son, and the glory of the Father and the Son in all His members.
2nd London Confession of Faith
Chapter 8 Of Christ the Mediator
1. It pleased God, in His eternal purpose, to choose an ordain the Lord Jesus, His only begotten Son, according to the covenant made between them both, to be the mediator between God and man; the Prophet, Priest and King; head and Saviour of His church, the heir of all things, and judge of the world; unto whom He did from all eternity give a people to be His seed and to be by Him in time redeemed, called, justified, sanctified, and glorified
4. This office the Lord Jesus did most willingly undertake, which that He might discharge He was made under the law, and did perfectly fulfil it, and underwent the punishment due to us, which we should have borne and suffered, being made sin and a curse for us; enduring most grievous sorrows in His soul, and most painful sufferings in His body; was crucified, and died, and remaining in the state of the dead, yet saw no corruption: and on the third day He arose from the dead with the same body in which he suffered, with which He also ascended into heaven, and there sitteth at the right hand of His Father making intercession, and shall return to judge men and angels at the end of the world.
5. The Lord Jesus, by His perfect obedience and sacrifice of Himself, which He through the eternal Spirit once offered up unto God, hath fully satisfied the justice of God, procured reconciliation, and purchased an everlasting inheritance in the kingdom of heaven for all those whom the Father hath given unto Him.
Q. 26. What offices doth Christ execute as our Redeemer?
A. Christ as our Redeemer executeth the Offices of a Prophet, of a Priest, and of a King, both in his Estate of Humiliation and Exaltation t. t Acts 3.22. Heb. 12.25. with 2 Cor. 13.3. Heb. 5.5,6;7. & 7.25. Psal. 2.6. Isa. 9.6,7. Mat. 21.5. Ps. 2.8,9,10,11.
Q. 29. How doth Christ execute the Office of a King?
A. Christ executeth the Office of a King, in subduing us to himself z, in ruling a, and defending us b, and in restraining and conquering all his and our Enemies c. z Acts 15.14,15,16. a Isa. 33.22. b Isa. 32.1,2. c 1 Cor. 15.25. Psal. 110. throughout.
Q. Why is he called Christ, that is, Anointed?
A.: Because he was ordained of the Father, and anointed of the holy Ghost the chief Prophet and Teacher, who hath opened unto us the secret Counsel, and all the will of his Father concerning our redemption: and the High Priest, who with that one only sacrifice of his body hath redeemed us, and doth continually make intercession to his Father for us; and a King, who ruleth us by his Word and Spirit, and defendeth and maintaineth that salvation which he hath purchased for us.
Q. But why art thou called a Christian?
A.: Because through faith I am a member of Jesus Christ, and partaker of his anointing, that both I may confess his Name, and present my self unto him a lively sacrifice of thankfulness, and also may in this life fight against sin and Satan with free and good conscience, and afterwards enjoy an everlasting kingdom with Christ.
Thanks be to God for our great King. Hosanna to the Son of David.