While The Ten Commandments are popularly known as God’s rules for Christians to live by, there really is just one commandment: the commandment to love. All the others follow from just this one overarching commandment. The commandment to love can be split into two more specific commandments: love God and love one another. The commandments to love God and one another can then be expanded further into The Ten Commandments. The first through third commandments involve loving God. The fourth through tenth commandments involve loving one another.
Every single sin can be described by how it opposes one of these commandments. There are no sins that do not fit under a commandment. In some cases, it’s not clear why a sin fits under a commandment, but that’s where the Catechism of the Catholic Church fits in. It explains each commandment in detail including all the opposing sins.
Interesting is the fact that the ninth and tenth commandments are more extensions of the sixth and seventh commandments than entirely new commandments. The sixth commandment (“You shall not commit adultery.”) covers the sinful actions related to impurity while the ninth commandment (“You shall not covet your neighbor’s wife.”) covers the sinful thoughts related to impurity. The seventh and tenth commandments follow the same model except covering sinful actions (seventh) and thoughts (tenth) related to stealing.
I have summarized this information in the chart below. It starts at the top with the commandment to love, then to love God and one another, then to the ten commandments, and finally, the sins that oppose those commandments. I have made the ninth and tenth commandments extensions of the sixth and seventh commandments, all under Love One Another. The commandments are in circles with orange text while the sins are in rectangles with red text. In parentheses next to each sin is the reference number of the corresponding passage in the Catechism of the Catholic Church for further reading.
May God bless you with his abundant grace,