The subject is tattoos...
The subject is not getting a tattoo because the Old testament law forbids it, as it also forbids trimming your beard, mixing wool and cotton and eating shellfish.
If one obeys the OT law on tattoos, wouldn’t he also be required to obey the law in other areas? Or did God say “obey My law against tattoos but ignore My law against eating pork and shellfish?
How easily folks tend to somehow miss the phrase “...for the dead...”.