This is what I understand by that verse ...right now the Father and the Son are in for example in a christian through the Holy Spirit....
how is this possible (this is my opinion) ...
Johhn 20:17
"“Don’t cling to me,” Jesus said, “for I haven’t yet ascended to the Father. But go find my brothers and tell them, ‘I am ascending to my Father and your Father, to my God and your God." Now when Jesus rose, he told mary magdalene that he was acsending to his Father and his Father was also Her father...being that she was a disciple ...so there is the Father....
Lets see another verse about the Father Jesus used
Matthew 10:20
"When you are arrested, don’t worry about how to respond or what to say. God will give you the right words at the right time. 20 For it is not you who will be speaking—it will be the Spirit of your Father speaking through you" so upto now we now the spirit of your father is the Holy Spirit as in Mark 13 :11 "But when you are arrested and stand trial, don’t worry in advance about what to say. Just say what God tells you at that time, for it is not you who will be speaking, but the Holy Spirit."
Galatians 4:4-6 paul says
"But when the right time came, God sent his Son, born of a woman, subject to the law. 5 God sent him to buy freedom for us who were slaves to the law, so that he could adopt us as his very own children.[
b] 6 And because we[
c] are his children, God has sent the Spirit of his Son into our hearts, prompting us to call out, “Abba, Father. "...
so the Father and the son making home in me is through the Holy spirit...
Romans 8:9-11 But you are not controlled by your sinful nature. You are controlled by the Spirit if you have the Spirit of God living in you. (And remember that those who do not have the Spirit of Christ living in them do not belong to him at all.) 10 And Christ lives within you, so even though your body will die because of sin, the Spirit gives you life[
d] because you have been made right with God. 11 The Spirit of God, who raised Jesus from the dead, lives in you. And just as God raised Christ Jesus from the dead, he will give life to your mortal bodies by this same Spirit living within you.