I came across this image on Pinterest recently:
I think the message is this: don’t be in a hurry to share what you think your faith is, or to adopt what you think is a clever slogan to represent it. Run it by people for feedback. Check your facts and calculations. Take lots of steps like those I’ve mentioned, before printing those t-shirts.
Oh, and that last line should say “Do the math, people.” Use the punctuation, people!