Q. Was Jesus omnipresent when He was a human being? Before His crucifixion, He said Luke 22:69 “But from now on, the Son of Man will be seated at the right hand of the mighty God.” Was He also in heaven at the right hand side of the Father during the whole time when He was on earth ?
A. This is an interesting question. Jesus has two natures, a divine nature as God, & a human nature as man. These two natures are united in the one person Jesus, called hypostatic union in theology.
As a man, Jesus can only be at one place at a time i.e. his human nature is not omnipresent. However, as God, & the Son never ceased to be God when He became man, Christ is omnipresent i.e. his divine nature is omnipresent. The one person Jesus Christ shares both natures, so we can say Jesus Christ is omnipresent, though His human body was not.
Was Christ in heaven while Jesus was on earth? My opinion is yes, though His physical body was not.