Forty is a significant number in the scriptures. Moses went to the mountain to seek the face of God for forty days in prayer and fasting. The people of Israel were in the wilderness for forty years in preparation for their entry into the Promised Land. Jesus was in the desert for forty days after His baptism, where He was tempted by Satan. For forty days after His resurrection Jesus appeared many times to His disciples to show them that He had truly risen, and He prepared them to carry on the work which he began during His earthy ministry.
Jesus' departure and ascension into heaven was both an end and a beginning for His disciples. While it was the end of Jesus' physical presence with His disciples, it marked the beginning of His presence with them in a new way. Jesus promised that He would be with them always to the end of time. He assured them of His power - a power which overcame sin and death. Now as the glorified and risen Lord and Saviour, ascended to the right hand of the Father in heaven, Jesus promised to give them the power of His Holy Spirit, which we see fulfilled ten days later on the Feast of Pentecost. When the Lord Jesus departed physically from the apostles, they were not left alone or powerless. Jesus assured them of His presence and the power of the Holy Spirit.
Jesus' last words to his apostles were to tell them that their mission was to be witnesses of His saving death and His glorious resurrection and to proclaim the good news of salvation to all the world. Their task was to proclaim the gospel - the good news of salvation - not only to the people of Israel, but to all the nations as well. God's love and gift of salvation is not reserved for a few or for one nation alone, but it is for the whole world, and the mission He gave to them, He gives to the whole Church, and it continues to be our mission today.
GRANT, we beseech thee, Almighty God: that like as we do believe thy Only Begotten Son our Lord Jesus Christ to have ascended into the heavens; so we may also in heart and mind thither ascend, and with him continually dwell; who liveth and reigneth with thee, in the unity of the Holy Spirit, ever one God, world without end. Amen.
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Pictured: "The Ascension" by Gustave Doré (1832-1883)