God the Father saw the travail of His Son, the Lord Jesus Christ, in His soul and in His body by His sufferings and death on the cross. Having given our Savior this work to do from eternity (1 Pet. 1:18-20; Rev. 13:8; Psalm 40:6-8), and seeing Him fulfilling His will thus, God the Father was satisfied with Christ for His people.
Thus, by His death, our Lord Jesus Christ justified all of His people (Rom. 4:25). It was by His knowledge of God’s will, which was in His heart and which He fulfilled, that He established everlasting righteousness for His people (Jer. 23:6; 33:16; Dan. 9:24; 1 Cor. 1:30). This is our justification. Christ fulfilled the eternal will of God by His obedience unto death, and He did this for His people (1 Cor. 15:3-4). “I come to do Thy will O God” (Heb. 10:7). We are “justified by His blood” (Rom. 5:9).
The Spirit of God tells what Christ has done. He tells us in His word, the Gospel of our salvation (1 Pet. 1:18-25; 2 Tim. 3:16; 2 Pet. 1:21; Heb. 10:15-18; Isaiah 53 with Rom. 10:16-17). And He tells us in our souls, pointing us to Christ alone as all of our acceptance and hope and satisfaction before God. By God the Father, we are drawn, irresistibly compelled, by the Holy Spirit of God, to what Christ has done for us outside of our personal experience (John 6:44; John 12:32; Luke 14:23).
The Gospel is the glad tidings, the good news, the account of what Christ has done according to the will of God. It is the account of the eternal love and will of God the Father, the eternal achievements of God the Son, our Lord Jesus Christ, on behalf of chosen sinners. The preaching of the Gospel is by the commission of our risen and reigning Lord Jesus Christ (Matthew 28:18). Gospel preaching is by the ministry and gifts of God the Holy Spirit (2 Cor. 3:3-6; Joel 2:28-29,32; Acts 2:33; Psalm 68:18 with Eph. 4:8-15). And this declaration, this glad tidings, is made over to my soul by God the Holy Spirit in regeneration, giving me life and faith in Christ my Lord (Titus 3:5-7; John 3:5-15). It is thus with God-given faith by the Spirit of God, that we do now hold fast in our hearts and confess with our lips this worship of praise and thanksgiving, “To Him who loved us and washed us from our sins in His own blood.” And it is to Him -- our Lord and Savior Jesus Christ -- that we do now look for life and all things. And in looking to Him, we look away from all that we are, even away from all the religion of men, to Christ only (2 Cor. 11:3-4).
Revelation 11:19 says that the tabernacle of God is in heaven. Hebrews 8:1-2 says that we have a High Priest who is set on the right hand of the throne of the Majesty in the heavens. From these, and from Isaiah 53:11, we are re-taught what we learned when we first believed the Lord Jesus Christ, and what we learn over and over again: our salvation was accomplished outside of our personal experience by the Lord Jesus Christ when by Himself He purged our sins (Heb. 1:3; Leviticus 16:30; Isaiah 44:22). Our experience of salvation directs us to Christ for us on the cross, for us in heaven, for us on His throne, for us ruling and reigning because, for us He finished the will of God, established everlasting righteousness, obtained eternal redemption, secured eternal inheritance, sanctified and perfected us by His one offering for us (Dan. 9:24; 1 Cor. 1:30; Philippians 2:5-8; John 4:34; 19:30; Heb. 10:10,14).