What does the Bible say about losing your first love?

In Revelation 2:4, Christ addresses the church at Ephesus, saying, 'Nevertheless, I have somewhat against thee, because thou hast left thy first love.' This passage reveals that a congregation can maintain outward appearances of faithfulness, such as doctrinal accuracy and good works, yet still lose their fervent love for Christ. This love is foundational to true faith and is vital for the vitality of the church. Without this first love, even commendable works can become routine and devoid of passion, risking removal from the place of Christ's witness.