Sins Against the Decalogue

Fornication- Sexual intercourse between a man and a woman who are not married. It is morally wrong to engage in intercourse before marriage, a sin against the Sixth Commandment

This is against Christ's teaching because Jesus said that this breaks the sixth commandment, so it is against his teaching.

The church also says that one should not have sex before marriage.

Lastly, our conscience tells us that this is a bad practice to do before being married. It tell…

http://thefw.com/woman-launches-wedding-ring-into-space/

Divination

• divination- The practice of seeking power or knowledge through super natural means apart from the one, true God; a sin against the First Commandment (Text pg 87)
• divination separates us from God (definition of sin) - it is not compatible with our belief in God
• 2116 All forms of divination are to be rejected: recourse to Satan or demons, conjuring up the dead or other practices falsely supposed to "unveil" the future.48 Consulting horoscopes, astrology, palm reading, interpretation of omens and lots, the phenomena of clairvoyance, and recourse to mediums all conceal a desire for power over time, history, and, in the last analysis, other human beings, as well as a wish to conciliate hidden powers. They contradict the honor, respect, and loving fear that we owe to God alone. (CCC2116).
• Divination can occur as a result of a lax conscience (ignoring our conscience) or erroneous conscience (misguided conscience)
• http://img2.wikia.nocookie.net/__cb20081114025704/harrypotter/images/4/40/D...

Heresy
The conscious and deliberate rejection of a dogma of the Church. It breaks the 1st commandment because if you commit heresy you are putting something before God and so you are breaking the commandment. This breaks your conscience because it separates you from gods way The churches authority is threatened by this because people do not follow it then Christ's teaching is that heresy is what goes against what Christ teaches and breaks gods word.

http://fatherjerabek.com/2014/11/05/the-heresy-of-action-and-catholic-ident...