Jesus is enough. In the OT only one priest was needed between the person and God. For us, Jesus is the one. No other is needed. He makes intercession for us Himself.
Romans 8:26-27 Likewise the Spirit helps us in our weakness. For we do not know what to pray for as we ought, but the Spirit himself intercedes for us with groanings too deep for words. And he who searches hearts knows what is the mind of the Spirit, because the Spirit intercedes for the saints according to the will of God.
Romans 8:33-34 Who shall bring any charge against God's elect? It is God who justifies. Who is to condemn? Christ Jesus is the one who died—more than that, who was raised—who is at the right hand of God, who indeed is interceding for us.
Hebrews 7:25 Consequently, he is able to save to the uttermost those who draw near to God through him, since he always lives to make intercession for them.
Your comment: “Jesus is enough. In the OT only one priest was needed between the person and God. For us, Jesus is the one. No other is needed. He makes intercession for us Himself.”
So why did Jesus have Apostles and gave them the command to go out and Preach and Baptize all?
Go, therefore,* and make disciples of all nations, baptizing them in the name of the Father, and of the Son, and of the holy Spirit, 20i teaching them to observe all that I have commanded you.* And behold, I am with you always, until the end of the age.” Matthew 28