Just because something is a sin in the Christian faith doesn't mean it is wrong. As a Christian, you should be listen to the teaching of Jesus, not the bible. If you look at Christianity from a historical point of view, you realized, Jesus' never create the Christian faith. He was merely a philosopher, just like Confucius. Christianity is a religion create by people that comes after Jesus, in his name, which might also be why in the early day, Romans see Christianity as a cult. And these people also created the Christian faith and wrote the bible. Most stuff within the bible are not the words of Jesus and some biography of Jesus was changed. For example, within the bible, the biography of Jesus written by his disciples record Jesus saying he is "son of god", heal people by touching them, and Mary's virgin birth. But when we look at the original version, which the bible took it from, it is very different, for example it didn't say "son of god" it said "servant of god" and Jesus didn't heal people by touch, but by intensive understanding of the usage of herbs for medical purpose and there was no Virgin birth, it clearly said Joseph and Mary gave birth to Jesus prior to their union and there was no angels telling Mary Jesus is the son of god, only saying prior to knowing she is pregnant, Mary had a dream, where a star fall into her stomach. In other word, the bible changed things, to add to the holy nature of Jesus. Add to the irony, the mainstream church "Catholic" was originally a political cult, created in Jesus' name, its real purpose was for the last Roman Emperor Constancy to secure his power and the Catholic church, killed more Christian, then anybody else, in the era of Roman history and continue to suppress people in religion's name, afterwards. Even Jesus and Peter foretold organization like such to emerge saying, the devil would rise, disguise as the servant of god and conduct evil, in his name, which is exactly what we saw within the Catholic church. In fact, even during WW2, the Catholic church endorse Hitler for massacre Jews referring to it as "work of god." During the 18th century, Napolian invaded the Vadican city and dissolve the Roman Catholic church, for the purpose of stopping the church using its religion status to influence society, for its own selfish gain. The British created their own Catholic church, in the 16th century, which the government can control, also to rid of Roman Catholic church's influence.