Jesus addresses the church at Ephesus. In so doing, He also addresses the Church in any time or location. Ephesus was a city of amazing wealth and comparative ease. A church in whose people work hard, have great deeds, persevere, and are discerning and knowledgeable in defending the faith. But, they have forsaken their first love. What kind of love is the Lord referring to? What cooled it off? Is this serious? Jesus threatens to remove their lampstand. In other words, they would cease being the Church. Yeah, it’s serious.