Wouldn't this term, perichoresis also include the mutual indwelling of Father/Son in those who believe through the word?
“I do not ask for these only, but also for those who will believe in me through their word, that they may all be one, just as you, Father, are in me, and I in you, that they also may be in us, so that the world may believe that you have sent me. The glory that you have given me I have given to them, that they may be one even as we are one, I in them and you in me, that they may become perfectly one, so that the world may know that you sent me and loved them even as you loved me."
YHWH uses mediators. In speaking of the coming New Covenant God said: “Behold, the days are coming, declares the Lord, when I will make a new covenant with the house of Israel and the house of Judah, not like the covenant that I made with their fathers on the day when I took them by the hand to bring them out of the land of Egypt, my covenant that they broke, though I was their husband, declares the Lord" ....... Just as YHWH is saying that the old covenant that he made previously when he took them by the hand out of the land of Egypt ---- Moses was the mediator through which YHWH accomplished that. The old covenant wherein the blood of goats and bulls was shed "But in these sacrifices there is a reminder of sins every year. For it is impossible for the blood of bulls and goats to take away sins." BUT now we have a better covenant ratified by the blood of Christ who offered himself as a ransom.........He does away with the first in order to establish the second. And by that will we have been sanctified through the offering of the body of Jesus Christ once for all. ----------- for this is my blood of the covenant, which is poured out for many for the forgiveness of sins.
Another ambiguous verse ----- Keep watch over yourselves and all the flock of which the Holy Spirit has made you overseers. Be shepherds of the church of God, which He has purchased with the blood of his own [Son].
Greater love has no one than this, that someone lay down his life for his friends....... Thank you, Lord Jesus for your obedience in carrying out God your Father's plan of salvation!!