Your explanation is confusing, [sic] how could christ be with the father and at thesame [sic] time be with those who belong to him?. [sic]
If Christ was only a human being with only a human nature, then that question would be meaningful. But Christ is a spiritual being with a divine nature, existing beyond the realm that we call space and time. He is simultaneously everywhere, while being no place in particular. The divine is not part of the universe; the universe is part of the divine. Not only can Christ be with the Father and all who belong to him, from the Christian viewpoint it could be no other way!
(edited to quote Matthew 28:19-20)
"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, teaching them to observe all that I have commanded you. And behold, I am with you always, until the end of the age."