And we have appointed upon their footsteps Jesus, the son of Maryam, testifying what is before him from Torah, and We have given him Injeel (Gospel); in It, there is the Guidance and the Light testifying what is before It from Torah, and a Guidance and an Advice for the heedful.
Messenger Jesus has been appointed to the Children of Israel to testify the Book revealed from the Lord before him as explained in verse 3: 49. And he was given the Gospel which is a portion of the Lord’s Book Adhikr. Jesus is appointed to command and follow the footsteps of Messengers and Prophets before him so that all the Prophets before him will get the portion of rewards of Jesus’ deeds as explained in verses 2: 261 and 4: 85. All the Prophets and Messengers were in Islam, and they all commanded mankind to be the devotees of Lord of the worlds just like they were.
Adhikr sent down to Messenger Muhammad is testifying and safeguarding all 312 previous Books and their Upright explanation as explained in verse 5: 48. Adhikr is the Best Interpretation of the Lord's Book, Advice, Guidance, and Light for the entire mankind. Only those who submitted wholly to Lord will consider Adhikr as Guidance, Mercy, and Herald as explained in verse 16: 89. The Arabic Quran reading Fujjar have made their food 'rejecting Adhikr' as explained in verse 7: 26. Adhikr is a cause of sorrow for them as told in verse 69: 50. Adhikr will increase nothing except filth over filth to these filthy Fujjar as explained in verses 9: 28, 95 and 125. The Fujjar will be dragged prone on their faces into Hell, they are in the worst place and they are the most strayed as explained in verses 25: 33-34.
See explanation 2: 2, 136; 3: 138, and 10: 57-58.