My pastor is having an affair. Should I expose it to the church?
First, make absolutely certain that you KNOW this to be factually true and accurate. If it is true, then YES, absolutely, report it to the elders, deacons, the board and other governing authorities of your church. If they don’t radically correct the situation, then expose it to the church at large.
If that happens though, you should also consider finding another church, because it’s not safe for you to subject yourself to such weak spiritual leadership. They are not good at guarding the flock of God, if they are willing to permit blatant sin in their leadership (See 1 Timothy 5:19–22; Ephesians 5:11; 1 Corinthians 5:9–13).
Think about it this way. If that pastor is truly doing this, then he is putting his own Eternal Life in serious jeopardy. He is risking eternal damnation, for temporary pleasure and self indulgence, (Galatians 5:19–21; 1 Corinthians 6:8–10; Revelation 21:7–8). If the church and its leadership are not willing to take radical steps to push that Pastor and that lady into serious repentance, then how much do they REALLY Love their pastor or that other lady?
You don’t let people that you truly Love run head-long into hell, without putting some serious opposition and roadblocks in their way, to try and get him to change course and repent, in order to try and save his Eternal Life and well-being. If the church and its leadership don’t love their own pastor enough to radically push him toward genuine repentance, then how careful and protective would they be with you and your Eternal Life and well-being? Think about that. It’s CRITICAL. (Ezekiel 3:17–21; Ezekiel 33:1–20; Ezekiel 33:11; Ezekiel 18:23).
Peace be with you.
Best wishes to you.