Paul and Barnabas butt heads over having John Mark join them again on a missionary trip. Later, in 2 Timothy 4:11, Paul calls John Mark "Useful to me for ministry."
Pastor John continues in Acts 15 regarding not adding to Salvation.
Pastor John teaches on Salvation by Grace through Faith - and nothing else.
Pastor John speaks about being Fully Committed.
Pastor John teaches about three parts of Acts 14, verses 8-20 - The Cripple, The Crowd, and The Confrontation.