A simple tattoo test
Hey, take this test: One of these tattoos is on someone who stars in a satanic show about vampires, killing, and evil doings. One of these tattoos is on a singer whose songs and videos glorify sex and lust. One of these tattoos is on a person who says it is a symbol of their Christian faith. Do you know which tattoo belongs to which person?
OF COURSE NOT! A tattoo of a cross can and is worn by any heathen who has $40 to shell out. It is worthless. Not only is it worthless, but it contradicts Scriptures and, thusly, should not be done!
What is of great worth is that you are obedient to God's word in your life, actions, words, and deeds. That is how you glorify God and bear witness of the Lord Jesus Christ living inside of you.