As the God-man and according to the covenant made between both He and the Father, He is the: only Mediator between God and man, Prophet, Priest, King, Head and Savior of the Church, Heir of all things, and Judge of the world. His prophetic office saves us from our ignorance. His priestly office reconciles us from our alienation from God and the imperfection of our best works. His kingly office rescues us from our adverse nature to God and our inability to return; it convinces, subdues, draws, upholds, delivers, and preserves us to His heavenly kingdom.
In His office of mediator, which He willingly undertook and executed, He came forth under the law, perfectly fulfilled it; endured most grievous torments immediately in His soul, and most painful sufferings in His body; was crucified, and died, was buried, and remained for three days, yet saw no corruption. On the third day He arose from the dead, with the same body in which he suffered, with which also He ascended into heaven, and now sits at the right hand of His Father, making intercession, and shall return, to judge all of creation, at the end of the world. Through this and as it was foretold, The Lord Jesus, by His perfect obedience and sacrifice of Himself, which He, through the eternal Spirit, once offered up to God as our substitute and representative head, has fully satisfied the justice of God, obtained reconciliation, and purchased an everlasting inheritance in the kingdom of heaven for all those who believe.
The Lord Jesus is referred to by numerous names including but not limited to: The Lamb of God, The Christ, The Messiah, Immanuel/Emmanuel, The Son of God, The Son of Man, The Image of the Invisible God, Redeemer, Bread of Life, Holy One of Israel, Prince of Peace, The Good Shepherd, The Suffering Servant, The Lion of The Tribe of Judah, Alpha and Omega, King of Kings, and Lord of Lords. Through His humble obedience and sacrificial death, He was given: the name that is above every name, so that at the name of Jesus every knee will bow of those who are in heaven and on earth and under the earth and every tongue should confess that Jesus Christ is Lord, to the glory of God the Father (Phil. 2:10).
God the Holy Spirit, the third person of the Trinity, is fully God; coequal and eternally proceeding from the Father and the Son. He is the Spirit of truth who proceeds from the Father through the asking of the Son and is given to believers on behalf of Jesus Christ upon salvation (John 14:16, 26; 15:26; 16:7). Holy Spirit is not a mysterious force but a personal Spirit with His own mind, will, and affections, who both inspired the writing of Scripture through the hands of men and now illuminates the meaning of Scripture as people read it.
Throughout Scripture, He is described as the Spirit of God, fire from Heaven, anointing oil, a dove, and a mighty rushing wind. In the Old Testament He hovered over the depths. He inspired the Prophets to speak the words of God. He anointed the Priests to mediate between holy God and sinful man. And He empowered the Kings to rule on behalf of God. In the New Testament, by the power of Holy Spirit, Jesus Christ was conceived of the Virgin Mary. He descended upon Jesus Christ as a Dove when He rose up out of the Jordan River during His baptism by John the Baptist to inaugurate Jesus’s Ministry (Matt. 3:16). Further, He descended upon the Apostles as tongues like flames of fire while they gathered in prayer on the Day of Pentecost, empowering them to be bold witnesses for Christ (Joel 2, Acts 1:8, 14; 2:1-13).
Holy Spirit convicts the world of sin, righteousness, and judgment (John 16:8). He is the comforting and counseling Advocate, the Paraclete, sent to call people to Jesus and assist Christians in sanctification. Upon regeneration, the Holy Spirit baptizes and indwells new believers with Himself, joins them with the Body of Christ, and marks them as a seal to guarantee the inheritance to come. He further gifts them with grace gifts (charismata) to serve God and build His Church and continues to sanctify them as they journey through Christian life (Eph. 1:13, 14; 4:11-16, Rom. 12:4-8; 1 Cor. 12:4-11, 26-31; 2 Cor. 1:22; 1 Pet. 4:10-11).
As one grows in spiritual maturity through the Holy Spirit working in and through them, the Christian believer will increasingly walk in freedom from sin and in the production of spiritual fruit, e.g., love, joy, peace, patience, kindness, goodness, faithfulness, gentleness, and self-control (2 Cor. 3:17; Gal. 5:22-23). Holy Spirit grants the Christian the ability to live honorable lives before the Lord. He helps the believer exalt Christ in holiness through good works; He enables the believer to worship Him in spirit and truth, and He intercedes on behalf of the believer in prayer (John 4:24; Rom. 8:26).