It is common for the Prophet of a subsequent religion to correct the misconceptions of the followers of a previous religion. In this passage Christians are clarified by God in the Quran that Christ is not God nor His mother a deity. After a few centuries Mary was called ‘The Mother of God’ and statues erected in churches all over the world since. Yet in the Bible there is no such station given to Mary.
This is why religion needs to be renewed as it becomes saturated with man made concepts and ideas instead of the real message of love. In the Baha’i Revelation Baha’u’llah also corrects the misconceptions of previous religions.
Quran 5:116-117
116. And God will say, "O Jesus son of Mary, did you say to the people, `Take me and my mother as gods rather than God?'" He will say, "Glory be to You! It is not for me to say what I have no right to. Had I said it, You would have known it. You know what is in my soul, and I do not know what is in your soul. You are the Knower of the hidden. 117. I only told them what You commanded me: that you shall worship God, my Lord and your Lord.