Once they received the empowerment of the Holy Spirit, they were to testify about Him beginning in Jerusalem and spreading to Judea, Samaria, and to the ends of the earth. These were the final words spoken by the Saviour to His followers.
Before their eyes, a spectacle akin to what Elisha witnessed with Elijah appeared, but in a far more glorious manner—no longer a chariot of fire, representing earthly notions, but rather a cloud of glory that ascended from Mount Olivet, taking with it the glorified body of Jesus. As He departed, He lifted His hands in blessing, reminiscent of the priestly blessing, offering His disciples a benediction similar to that given by Elijah to Elisha and by Moses to the leaders of the twelve tribes. The apostles heard from angels, in addition to the Lord's assurance, that He would return one day in the same manner as He ascended, though they were not informed of the timing of that return.
After forty days spent teaching them post-resurrection, the Lord had prepared them for this momentous occasion, prompting them to return to Jerusalem with joy, praising God. They could no longer be criticized for their previous lack of love for Him, as He had previously said at the Last Supper: "If you loved Me, you would rejoice that I said, ‘I go to the Father, for My Father is greater than I’" (John 14:26). Similarly, they were no longer at fault for their doubts, as He had questioned them then, saying, "I go to Him who sent Me. None of you ask Me, ‘Where are you going?’ Because I said these things to you, your heart was filled with sorrow. But I tell you the truth, it is better for you that I go; for if I do not go, the Comforter will not come to you; but if I go, I will send Him to you" (16:5-7). In their current state, they mirrored the image described in the Lord's high priestly prayer (17:6-19): “I have proclaimed Thy Name to the men whom Thou hast given Me out of the world... and they have kept Your Word. Now they have realized that all that Thou hast given Me is from Thee; for the words which Thou hast given Me, I have communicated to them; and they have received and understood truly that I came from Thee, and have believed that Thou hast sent Me.”