In Matthew 5.29 & 30, Jesus said to his disciples, "If your right eye causes you to sin, tear it out and throw it away. If your right hand causes you to sin, cut if off and throw it away. It is better for you to lose one of your members than to have your whole body go into Gehenna." The Lord has a point: we must remove what causes us to sin. Sometimes we can have hidden desires our ego still urges us to fulfill. Therefore, we must have the Lord go deep into us to find and remove all the causes. Again, attain union with him to give him total freedom to accomplish this. As it is, the more perfect your union is, the holier you become.