The sermon 'I am under obligation' from Paul Washer was very influential to me back in 2007 when my prior views on Christian conversion and God's sovereignty were turned on their heads. I had spent many late hours arguing with Calvinists on discussion boards over matters of T.U.L.I.P months prior to first hearing a Paul Washer sermon. Then these doctrines that I once rebelled against made perfect sense in light of a better understanding of man's natural state. Free and Sovereign effectual grace is what is needed for the spiritually dead sinner---a truly amazing grace.
Take some time to listen from the player below.