Overall meaning :
Allah Almighty reminds him that he will say to Jesus, peace be upon him, on the Day of Judgement, in the presence of the Christians by way of reproving them: ‘Jesus son of Mary, did you ever say to people to take you and your mother as gods besides Allah?’ ‘Glory be to You! You are high exalted above all imperfections!’ he will reply, ‘It is not for me to say what I have no right to say. Had I ever said this, You would certainly have known it, for nothing is hidden from You. You know all that is within myself, whereas I do not know what is in Yourself. You have full knowledge of all that is hidden and unseen. I told them only what You commanded me to say: “Worship Allah, my Lord and your Lord.” I was witness to what they did as long as I remained in their midst. Then when You raised me up alive to Yourself, You were always watching over them. You are indeed a witness to all things. If You punish them, they are Your servants; and if You forgive them, You are the All-Glorious with irresistible might, the All-Wise.’
Allah will say, ‘This is the day—the Day of Judgement—the truthful will benefit from their truthfulness. They will have gardens beneath whose trees and palaces river flow, where they will stay for all eternity. Allah is pleased with them and they are pleased with Him. That is the supreme triumph.’
The Almighty then declares that the kingdom of the heavens and the earth and everything in them belongs to Him alone, and that He has power over all things.