Love is a transformational force.
«But I have this against you, that you have abandoned the love you had at first. Remember therefore from where you have fallen; repent, and do the works you did at first. If not, I will come to you and remove your lampstand from its place, unless you repent» (Revelation 2:4-5).
When Jesus addressed the angel of the Church in Ephesus, He called the Church back to what started it all, and that was supposed to carry them through all of life´s challenges: LOVE.
He did not coerce them to do «the first works», but He called them back to their original love, which produced the works.
This is not a sentimental, man-made love, but a love that is rooted in the Triune Godhead: Father, Son, and Holy Spirit.
God´s nature is love. His saving work for the world was motivated by love:
«For God so loved the world, that he gave his only Son, that whoever believes in him should not perish but have eternal life» (John 3:16).
Love is the proof that we know God:
«Beloved, let us love one another, for love is from God, and whoever loves has been born of God and knows God. Anyone who does not love does not know God, because God is love» (1John 4:7-8).
God-given love produces fruit of an eternal nature, with eternal results. Apostle Paul expressed it so that mankind will never forget:
«If I speak in the tongues of men and of angels, but have not love, I am a noisy gong or a clanging cymbal. And if I have prophetic powers, and understand all mysteries and all knowledge, and if I have all faith, so as to remove mountains, but have not love, I am nothing. If I give away all I have, and if I deliver up my body to be burned, but have not love, I gain nothing. Love is patient and kind; love does not envy or boast; it is not arrogant or rude. It does not insist on its own way; it is not irritable or resentful» (1Corinthians 13:1-13).