abcaines' post reminded me of this story from about 20 years ago, one that really hit me between the eyes and helped me to grow...
I was soulwinning one day in a neighborhood of the place where I grew up, a respectable working-class section of town. I was growing frustrated with the fact that I was not able to get anybody to answer the door, hadn't talked to anybody about Jesus for about a dozen doors that I had knocked.
So as I was walking to the next door I saw two women get out of a car nearby. They were decently dressed, middle age, and fit what I thought was a stereotypical look of lesbians, so I thought, yeah, I'm going to get to talk to a lost person about the Lord. I approached them and began my usual introduction of who I was and why I was interrupting their day but before I could get finished they said "oh it's wonderful that you're out here telling people about Jesus, we're from such-and-such church".
The church that they mentioned was not a Baptist Church, but it was a Evangelical conservative bible-believing church, one that they would not be comfortable in if they were practicing lesbians. It dawned on me that I had made some assumptions that were not warranted, and my desire to share the gospel was tainted by an attitude that was too presumptive and at its core judgmental, perhaps lacking the proper, as abcaines said, measured with grace.
That lesson on humility from the book of Samuel where David was but a little boy amongst many seemingly able-bodied men came to mind. Man looks on the outer appearance but God looks on the heart.