What does the Bible say about forsaking our first love?

In Revelation 2:4, Christ addresses the church in Ephesus, stating, 'I hold this against you, you have forsaken your first love.' This signifies a serious spiritual decline where initial zeal and commitment to Christ wane over time. The danger is that many Christians, like those in Ephesus, can serve diligently and defend sound doctrine but still lack the passionate love for Christ that once characterized their faith. This loss can arise from distractions in the world, complacency, or neglect of spiritual practices like prayer and devotion.