Paul Matthies, a former missionary in Asia and current pastor in Texas, did a four part sermon series on the topic. Paul’s single and in this series he was transparent about his own wrestling with loneliness. Desiring God has pulled together some of the highlights from those sermons. You can read a few of them here and you can find all 20 quotes and the links to the four sermons at http://www.desiringgod.org/blog/posts/20-quotes-on-loneliness .
“Listening to the music our culture listens to, I realize all of us fluctuate between loneliness as our problem to loneliness as a solution to our problem. . . . We see loneliness as a problem at first, but then we think that maybe it’s a solution to our problems. And I’m here to tell you that we’re not the first people in the history of mankind to choose loneliness.”
“We have a heart problem. We can invite more people into our lives, and we can invite more quality people into our lives, but the problem is that doesn’t take care of the root pain of separation that’s happening there. We have a spiritual
heart problem and we don’t need medication, we need a new heart, and that takes a doctor. And so, we have a strong desire to be in intimate fellowship with God and others, but the problem is that we have, at our root, a sin problem that
clouds our hearts.”
“Loneliness, at its root, is a spiritual issue. We don’t need to merely hang out with more friends. We don’t need to merely learn how to speak love languages. We need help. We need a savior. We need an advocate whose name is Christ Jesus. And our heart cry should not merely be, ‘I do bad things because I’m lonely, so someone come keep me company, make me feel better.’ Our deep heart cry should be, ‘I’m lonely because I’m a sinner in a dark and fallen world. God help me.’”
“If you’re lonely, have you ever thought about coming to God and offering it to him as a gift in worship? In saying, ‘I’ve tried everything to fix it, and I can’t. I’ve tried filling it with the world. I’ve tried filling it with people. I’ve tried seeking you. I don’t know what to do with it. So I’m just going to offer it up to you. Can you take this ugly thing and make it something beautiful?’”