In Acts 13:13, John Mark left the group for some reason.
Now Paul and his companions sailed from Paphos and came to Perga in Pamphylia. And John [Mark] separated himself from them and went back to Jerusalem, (Acts 13:13, AMP)
That was that for Paul. Later Barnabas wanted John Mark to travel with them again but Paul would have none of it.
And after some time Paul said to Barnabas, Come, let us go back and again visit and help and minister to the brethren in every town where we made known the message of the Lord, and see how they are getting along.
Now Barnabas wanted to take with them John called Mark [his near relative].
But Paul did not think it best to have along with them the one who had quit and deserted them in Pamphylia and had not gone on with them to the work. (Acts 15:36-38, AMP)
Has that ever happened to you? You failed your first time out and no one would give you a second chance? Thank God for the Barnabas folks of the world; the folks who are willing to give us a second chance.
And there followed a sharp disagreement between them, so that they separated from each other, and Barnabas took Mark with him and sailed away to Cyprus.
But Paul selected Silas and set out, being commended by the brethren to the grace (the favor and mercy) of the Lord. (Acts 15:39-40, AMP)
I guess it worked out in the Lord , for now, there were two teams instead of one. Sadly though, it caused disruption in the faith.
Prayer- Lord we thank you for the folks of second chances and we thank you too, God, for being a God of second chances! Amen.