Col 4:10-11
Aristarchus, my fellow prisoner, sends you his greetings; and also Barnabas’s cousin Mark (about whom you received instructions; if he comes to you, welcome him);
and also Jesus who is called Justus; these are the only fellow workers for the kingdom of God who are from the circumcision, and they have proved to be an encouragement to me.

Mark had left the group on the first trip…

Act 15:37-38
Barnabas wanted to take John, called Mark, along with them also.
But Paul kept insisting that they should not take him along who had deserted them in Pamphylia and had not gone with them to the work.

But look at the balance of the Word.
John Mark was not useless.
Paul, writing later at the end of his life said…

2Ti 4:11
Only Luke is with me. Pick up Mark and bring him with you, for he is useful to me for service.

And Peter says…

1Pe 5:13
She who is in Babylon, chosen together with you, sends you greetings, and so does my son, Mark.

It is believed that this is the Mark that wrote the gospel of Mark.

He also might have been the biblical streaker…

Mar 14:51-52
A young man was following Him, wearing nothing but a linen sheet over his naked body; and they seized him.
But he pulled free of the linen sheet and escaped naked.

We all stumble...fall…
Mark abandoned the group.
Yet, the Lord restored Him mightily.

Fear not.
Remember.

Pro 24:16
For a righteous man falls seven times, and rises again,
But the wicked stumble in time of calamity.

Arise!
Press on!