Hi FH!
I would suspect they are referring to Leviticus 19:28
You shall not make any cuttings in your flesh for the dead, nor tattoo any marks on you: I
am the LORD.
This was a prohibition under the Mosaic law. To my knowledge it was not repeated in the New Testament. I would say that this issue falls directly under opinion 101. With that said, the bible
is clear that we aren't to cause weaker people to stumble. In the past, tatoos were veiwed as something most people, in america at least, wouldn't do. To a certain extent, that view seems to have changed in the last 10 years. With all that said,I would be uncomfortable with it for myself, but would have noproblem with a brother who had one. I also would not let a bunch of tatoos on a non-christian affect my trying to share the Gospel with him.
I would also have a problem with anyone making a new brother feel somehow "second class" because he happened to have them. If i had to explain it to my kids, I would tell them that tatoos probably aren't the first thingI think of on a christian man or woman, but that if a brother or sister had one or two, or even a bunch, that God has looked past a lot worse things in my life than a few tatoos. I suspect He does that for all of us.
GH