The most reliable early manuscripts of the Gospel of Mark end at verse 8. Other manuscripts include various endings to the Gospel. A few include both the “shorter ending” and the “longer ending.” The majority of manuscripts include the “longer ending” immediately after verse 8.
Some early manuscripts add: And they excused themselves, saying, “This age of lawlessness and unbelief is under Satan, who does not permit God’s truth and power to conquer the evil [unclean] spirits. Therefore, reveal your justice now.” This is what they said to Christ. And Christ replied to them, “The period of years of Satan’s power has been fulfilled, but other dreadful things will happen soon. And I was handed over to death for those who have sinned, so that they may return to the truth and sin no more, and so they may inherit the spiritual, incorruptible, and righteous glory in heaven.”
Or new tongues; some manuscripts do not include new.