Significantly, the Mosaic Law forbade God’s people to tattoo themselves. Said Leviticus 19:28: “You must not make cuts in your flesh for a deceased soul, and you must not put tattoo marking upon yourselves. I am Jehovah.” Pagan worshipers, such as the Egyptians, tattooed the names or symbols of their deities on their breast or arms. By complying with Jehovah’s ban on tattoo markings, the Israelites would stand out as different from other nations.—Deuteronomy 14:1, 2.
While Christians today are not under the Law of Moses, the prohibition it laid on tattooing is sobering. (Ephesians 2:15; Colossians 2:14, 15) If you are a Christian, you would certainly not want to make markings on your body—even temporarily—that smack of paganism or false worship.—2 Corinthians 6:15-18.
If you really want the cross tattoo, please read the article referenced below, so that you understand what the cross actually represents.