Codex Sinaiticus is the oldest complete manuscript of the New Testament.
Codex Sinaiticus compared to Textus Receptus (King James Version)
Codex Sinaiticus contains, the Epistle of Apostle Barnabas and the Shepherd of Hermas.
The resurrection narrative at the end of Mark 16:9–20 is was added to Textus Receotus from the Codex Sinaiticus.
The reference to Jesus’ ascension in Luke 24:51. is also not included, “carried up into heaven.” was added to Textus Receptus. This leaving no ascension in the Gospels.
Mark 1:1 in the reference to Jesus as the Son of God was added to Textus Receptus.
Matthew 24:36
Textus Receptus removed "neither the Son"
“But of that day and hour knoweth no man, no, not the angels of heaven, but my Father only.”
Codex Sinaiticus
“But of that day and hour knoweth no man, no, not the angels of heaven, neither the Son, but the Father only.”
Luke 9:55–56 was added to Textus Receptus, “But he turned, and rebuked them, and said, Ye know not what manner of spirit ye are of. For the Son of man is not come to destroy men’s lives, but to save them. And they went to another village.”
The woman caught in adultery from John 8: 3–11, was added to the Textus Receptus.