What does the Bible say about the first love in Revelation?

In Revelation 2:4-5, Jesus addresses the church at Ephesus, highlighting their great deeds but lamenting that they have forsaken their first love. This first love refers to the initial fervor and devotion believers have for Christ upon their conversion. It is essential for Christians to maintain that passionate love for the Savior, reflecting on how His love has granted us spiritual life. The call to remember from where we have fallen and to repent underscores the need for continual devotion and alignment with Christ's teachings in our lives.