Ascension detailIn the Gospel according to St. Mark we read:

Jesus said to his disciples: “Go into the whole world and proclaim the gospel to every creature. Whoever believes and is baptized will be saved; whoever does not believe will be condemned.”

Pope St. Leo the Great:
“Since the Ascension of Christ is our elevation, and since, where the glory of the Head has preceded its, there hope for the body is also invited, let us exult, dearly beloved, with worthy joy and be glad with a holy thanksgiving. Today we are estab­lished not only as possessors of Paradise, but we have even pen­etrated the heights of the heavens in Christ, prepared more fully for it through the indescribable grace of Christ which we had lost through the ill will of the devil.”