The real key to this passage is the short prepositional phrase, “in love” (en agape), which is a theme that occurs six times in this letter. God chose us in love (Ephesians 1:4), that we should be “rooted and grounded in love” (Ephesians 3:17), “bearing with one another in love” (Ephesians 4:2), “speaking the truth in love” (Ephesians 4:15), "building up the body of Christ in love" (Ephesians 4:16) and "walking in love" (Ephesians 5:2).
Learning to love is one of our major tasks in life, and it is tested and thereby strengthened when it does not come easy. Here is a powerful statement that is often read at weddings: “Love bears all things, believes all things, hopes all things, endures all things. Love never ends” (1 Corinthians 13:7-8).
This was not intended just for couples loving each other, but that we would be so inspired and empowered by God’s love that we would develop that same love for all people; yes, even very difficult people.
We Christians are called to love as God loves us, which of course would be impossible without God’s love flowing through us by His Spirit (1 John 4:11). Even evil people love those who love them. Of course, we are referring here to minor issues and not serious sins or injustices. So we also must be discerning, not naive to those who may be truly malicious.