In this sermon, Pastor Tim begins a new series on the seven letters to the churches in Revelation. He focuses on the first letter to the church in Ephesus, which was known for being active, determined, smart, and committed. Despite their many good qualities, Jesus had one complaint against them: they had left their first love. The pastor draws parallels between how our love for Jesus can grow cold over time, similar to how passion can fade in a marriage. He identifies nine warning signs of a cold heart, including worshiping less, doing more for God than being with God, becoming less sensitive to God's presence, going through religious motions without emotion, complaining instead of celebrating, changing attendance patterns, losing passion for evangelism, caring more about human approval than God's, and no longer longing for God's presence. The solution Jesus gives is to remember, repent, and return to the things done at first. The sermon concludes with communion, symbolizing this process of returning to our first love.