God raised Jesus from the grave and exalted Him to His right hand in heaven (Ephesians 1:20). Yet for 40 days Jesus made many bodily appearances to His disciples. But the 40th day was different. With His disciples looking on, He slowly ascended into the sky until a cloud hid Him from view (Acts 1:9).
Why didn't Jesus continue His visible appearances on earth? He had told His disciples that the Holy Spirit would not begin His work until after He left (John 16:7). The time had come for His followers to trust His word instead of relying on their physical senses (20:25,29). Their Master's slow, visible, and final ascent was a dramatic way of saying to them that a new era was about to begin.
From heaven Jesus would send the Holy Spirit to replace His bodily presence. Christ would form the church and rule as its Head (Ephesians 1:22-23). By His Spirit, He would live within His followers and fill them with peace and power. In heaven He would intercede for them before the Father's throne (Hebrews 7:25). He would no longer be visibly present, but He would still be with them in a very real way (Matthew 28:19-20).
The same is true for every believer today. That's why we can be thankful that Jesus ascended to heaven. — Herbert Vander Lugt
He who came to save us, He who bled and died,
Now is crowned with glory at His Father's side;
Nevermore to suffer, nevermore to die,
Jesus, King of glory, is gone up on high. —Havergal
Jesus ascended to heaven that He might continue His work on earth.