“This is love: not that we loved God, but that he loved us and sent his Son as an atoning sacrifice for our sins. 11 Dear friends, since God so loved us, we also ought to love one another.” (I John 4:10-11 NIV)
God loved us even while we still hated Him. Therefore, we ought to love others even before they have earned our love. Just as Jesus sacrificed Himself for the whole world (I John 2:2), we must be willing to sacrifice ourselves for others.