My advice, for what it's worth, is not to do anything hasty. Visit the new/closer congregation for a while and if you think you could feel comfortable there consult with the pastor and sessions of both congregations for advice. Church membership is more than just a personal choice, it should be done in consultation with the ministers and elders you are vowing to submit to.

Do you plan on on moving back to the original congregation when you are done with your program?

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Rev. Adam King
Minister in the RPCNA
Stated Supply: Sterling, KS