Ascension is the festival that reminds us of Jesus going to heaven.
As you could see from Easter, Jesus rose from the dead. After his resurrection he stayed 40 days with his disciples. Then he went up to Heaven and is now seated at the right hand of God.
Like you Muslims, we believe that Jesus is in heaven and that He will return at the end of the world.
Injil, Acts 1:11 “This Jesus who has been taken from you into heaven, will come in the same way you have seen him go into heaven. ”
The difference is that for us, the Jesus who was raised has also risen.He went through death and conquered it. He is not coming back to establish a religion (Islam) but to establish the Kingdom of God.
Perhaps you are wondering: why Jesus, who conquered death, did not remain on Earth to support and encourage his followers?
The Pentecost tab will give you the answer.