From a Ligon Duncan sermon; http://www.fpcjackson.org/resource-...1-bulletin-lying-and-the-glory-of-god-website Do you see this section of scripture as optional or essential? Lying is a huge problem. It's pervasive in our culture and it has permeated the church, and so the Apostle Paul is wanting to say to us first ‘Don't live like the world in the way that you tell the truth. No, instead of speaking falsely, speak truthfully.’ But the second thing that he's wanting to say to us, positively, is that we are to speak the truth to our neighbors, recognizing especially that in the body when we speak the truth we are literally speaking the truth to ourselves, because we are all in one body. Now, that's really all I want to do with you this morning, is look at those two things. I. Put off a life of speaking untruthfully and put on a life of telling the truth, for God's glory and the body's unity Let's begin in verse 25, where the Apostle Paul says, “Therefore, laying aside falsehood....” Paul, you see, in verse 25, is telling us to put off a life of speaking untruthfully and to put on a life of telling the truth. And he tells us to do that (notice the very last thing he says in verse 25: “...for we are members of one another”) because truth-telling has an impact on the unity of our fellowship, on the unity of the body, so that our truth-telling is not only a matter of doing what God has told us to do. It's not only a matter of glorifying God with our speech. It's not only a matter of being people of integrity, but it actually has a direct impact on the unity of the body, on the unity of the church, on the unity of the people of God, the unity of husbands and wives and families. And so the apostle says put off a life of speaking untruthfully and put on a life of telling the truth, for God's glory and the body's unity. You know, again, you may still be saying, “I'm not a liar. That's not a problem I have.” But when your wife confronts you with sin and you deny it, you’re lying. And when you tear down another person by your speech, and thus you do not speak of them as God would have you speak of them, you are speaking untruthfully. And when you make commitments that you do not follow through on, you are lying. And, my friends, lying in its manifold forms is pervasive in life in the modern world, and the Apostle Paul is saying something radical and counter-cultural. He is saying do not be like the world in this way.