From Bonhoeffer's Life Together:
Just as love to God begins with listening to His Word, so the beginning of love for the brethren is learning to listen to them. It is God's love for us that He not only gives us His Word but also lends us His ear. So it is His work that we do for our brother when we learn to listen to him. . . .
Many people are looking for an ear that will listen. They do not find it among Christians, because these Christians are talking where they should be listening. But he who can no longer listen to his brother will soon be no longer listening to God either . . . . One who cannot listen long and patiently will presently be talking beside the point and be never really speaking to others, albeit he be not conscious of it.