We won't insist on having things go our way, but we will be willing to let others have their way. We won't be irritable or resentful of each other, but will put up with one another's shortcomings and weaknesses. We won't rejoice in what is wrong, but will rejoice in the truth, and we will speak the truth in love, even if that truth is spoken at great personal cost. This kind of love can only exist where Christ gets between us and we love one another through Christ. Without Christ between us, we would destroy one another.
Sin is the barrier that gets in the way of love.
Sin prevents us from loving the husband or wife, the child, the parent, the neighbor, the fellow congregation member. Sin cuts us off from God's love, and it cuts us off from each other. Sin isolates us in fear and defensiveness. But Christ has broken down the barriers by His dying and rising. He has thrown down the walls between ourselves and between us and God.