In life, one thing you can't certainly escape is a conflict, one way or the other you will find yourself in it. Dealing with conflicts is sometimes a difficult task, especially when the person involved is not ready to put an end to it. During this period, it may seem like there's no way out as you have already done all you can and keep your hands open to welcome the person back.

What about when you are right and the other person is wrong?

That's one of the difficult situations, some Christians found themselves in. Before clamoring this further, let look into the life of Apostle Paul, Barnabas and John Mark.
Act 12:25 And Barnabas and Saul returned from Jerusalem, when they had fulfilled their ministry, and took with them John, whose surname was Mark. 

Act 13:13 Now when Paul and his company loosed from Paphos, they came to Perga in Pamphylia: and John departing from them returned to Jerusalem.


Reading from chapter 12 - 13, one will see there's a mutual and long time relationship between Barnabas and Paul. Barnabas and Paul being commissioned to go on that missionary journey, and chapter 13:5, it says, "When they, Paul and Barnabas, arrived at Salamis, they proclaimed the word of God in the Jewish Synagogues (as was their custom, they always started with the Jews Synagogues). John was with them as their helper." So, John Mark apparently went with Paul and Barnabas on the first missionary journey. They went to Cyprus.
Cyprus was Barnabas' home.  Then they headed up to Turkey. They wanted to
cross over to Turkey. Turkey is where Paul was from: Tarsus.  

So what happens? The problem is John Mark quits. On the first missionary
journey, John Mark quits. It says, "from Pathos, Paul and his companions sailed to
Perga, and then Pamphilia, where John left them and returned to Jerusalem." 
The Bible didn't say any negative thing about John Mark and we can't point out his wrong. The Bible says He left them. But we later discovered there's a rift between John Mark and Paul.

On the second missionary journey, when they come back and they are in Antioch again, and Barnabas says, "Hey, let's take John Mark again and let's go out again. You know Paul, Barnabas, and John Mark. Let's go like the three of us did before." Paul says, "Over my dead body. I'm not taking that kid anywhere."  So Paul is really so upset with John Mark that Barnabas and Paul split. Paul takes Silas on his second missionary journey, and Barnabas takes John Mark and goes off back to Cyprus, where Barnabas was from.  So you have this division between Paul and Barnabas.   Now think about how close Paul and Barnabas were. Paul and Barnabas did their first missionary journey together, spending all that time travelling.  Then Paul was stoned and left for dead.  He was beat up how many times? Barnabas was there with him that whole time. It would be like almost coming close to death with somebody, you get close. Like the Band of Brothers idea. These guys were really close. They've seen a lot of hardship together.  And yet, because of this conflict between Paul and John Mark, Paul won't take John Mark the second.

There are lots of theories on the reason why Paul rejected John Mark, since all the theories are not affirmed by the Bible, I would skip them. We have Paul rejecting John Mark, who is Barnabas's brother. Barnabas couldn't reject his brother so they split up.
Can godly people disagree with each other?
They are godly, why would they disagree?
The truth is godly people can disagree with each other and godly people do seek reconciliation.
Paul was good and a great man who wrote most part of the New Testament, Barnabas was really a good guy. And John Mark, he was a good, well respected young man. Peter took him as a son.

1Pe 5:13 The church that is at Babylon, elected together with you, saluteth you; and so does Mark my son.

Now, do people ever change over time? Do people ever regret what they did earlier in life? And how do you work that out in terms of some of these things?
Well, here's Paul at the end of his life. Paul is going to write,

2Ti 4:11 Only Luke is with me. Take Mark, and bring him with thee: for he is profitable to me for the ministry.


He knows he is going to die.  Now Paul knows what's coming and he knows he is going to die. Paul writes, after the big rift over John Mark, this is how Paul ends his life: "For Demas, because he loved this world has deserted me and has gone to Thessalonica. Crescens has gone to Galatia, and Titus to Dalmatia.  Only Luke is with me." Do you remember Luke? He writes the gospel of Luke and the book of Acts. Luke was a doctor. So Paul got beat up so many times that you can imagine it was nice having a doctor there to patch him up. Paul knows he is going to die and he says, "Get Mark and bring him with you because he is helpful for me in my ministry."

So here is Paul at the end of his life, realizing that there is this huge rift between himself and Mark. At the end of his life, as he is facing death, he writes "Timothy, go get Mark. Bring him here. He is profitable for me and for my ministry." 

So you get this reconciliation happening between two people that went on the first missionary journey.  And, after all these years, a couple decades later, you get this reconciliation where Paul is going to die in about 68 AD.
No room for ego, it doesn't matter who you think is right or wrong. Everyone does make mistakes. Reconcile today.

(David Marcus, Ted Hildebrandt )