The Lord Jesus Christ is the one and only Mediator with God, through the everlasting covenant. He works in believers to do what is well pleasing to God (Hebrews 13:20-21). God the Father is well pleased in his only begotten Son. We can only please God when his Son Jesus works in us, and through us to the praise of his glory.
"For there is one God and one Mediator between God and men, the Man Christ Jesus, who gave Himself a ransom for all to be testified in due time" (1 Timothy 2:5-6). A mediator brings two parties together who are in disagreement. God's disagreement with us is on one issue alone. That is our sin. There is only one Mediator with God. Jesus is the believer's one and only Mediator.
God the Father gave his only begotten Son as our one and only Mediator of his mercy, grace and love (John 14:6; Acts 4:12). Rejecting the Lord Jesus Christ is rejecting God's mercy, grace and love. Jesus is our one and only Mediator with God, because he alone is the God-Man. He is fully God and fully man, as incarnate deity.
Jesus gave himself as every believer's ransom at the cross. He is the gift of God the Father, who alone has paid the price to set believers free from condemnation and wrath (John 3:18, 36; Romans 8:1). That's why Jesus is our one and only Mediator with God. Jesus died for sinners at the cross. He is risen from the dead as the believer's one and only Mediator with God.
