TAT 206 Truthing in Love

But practicing the truth in love, we will in all things grow up into Christ, who is the head. (Eph. 4:15 NET, emphasis added)

But He turned and said to Peter, “Get behind me, Satan! You are a stumbling block to me, because you are not setting your mind on God’s interests, but on man’s.” (Matt. 16:23 NET, emphasis added)

As Christians do we really know how to practice the truth in love?