This is a sermon preached by my father over thirty years ago, a couple weeks before he died. It's short. Give it a listen:
Is Holiness Possible Today (With a Warning from Esau)
If this sermon jolted you awake, it's time to find a church where you and your loved ones will be blessed by God with a faithful pastor who exhorts, admonishes, and rebukes his sheep. Life is short and without holiness no man will see God.
You say you have a Reformed pastor who's never told you that?
Run for your life.
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The painting is Hogarth's "The Sleeping Congregation."