The 16th verse:
"Then the eleven disciples went away unto Galilee into a mountain, where Jesus had appointed them."
The story about the soldiers contained in the 11th, 12th, 13th, 14th and 15th verses is an interpolation—an afterthought—long after. The 15th verse demonstrates this.
Fifteenth verse: "So they took the money and did as they were taught. And this saying is commonly reported among the Jews until this day."
Certainly this account was not in the original gospel, and certainly the 15th verse was not written by a Jew. No Jew could have written this: "And this saying is commonly reported among the Jews until this day."
Mark, John and Luke never heard that the soldiers had been bribed by the priests; or, if they had, did not think it worth while recording. So the accounts of the Ascension of Jesus Christ in Mark and Luke are interpolations. Matthew says nothing about the Ascension.
Certainly there never was a greater miracle, and yet Matthew, who was present—who saw the Lord rise, ascend and disappear—did not think it worth mentioning.
On the other hand, the last words of Christ, according to Matthew, contradict the Ascension: "Lo I am with you always, even unto the end of the world." John, who was present, if Christ really ascended, says not one word on the subject.
As to the Ascension, the gospels do not agree. Mark gives the last conversation that Christ had with his disciples, as follows:
"Go ye into all the world and preach the gospel to every creature. He that believeth and is baptised shall be saved; but he that believeth not shall be damned. And these signs shall follow them that believe: In my name shall they cast out devils; they shall speak with new tongues. They shall take up serpents, and if they drink any deadly thing it shall not hurt them; they shall lay hands on the sick and they shall recover. So, then, after the Lord had spoken unto them, he was received up into heaven and sat on the right hand of God."