St. John distinguishes three kinds of Covetousness or concupiscence: lust of the flesh, lust of the eyes, and pride of life. 300 In the Catholic catechetical tradition, the ninth commandment forbids carnal concupiscence; the tenth forbids coveting another's goods.

The tenth commandment unfolds and completes the ninth, which is concerned with concupiscence of the flesh. It forbids coveting the goods of another, as the root of theft, robbery, and fraud, which the seventh commandment forbids. "Lust of the eyes" leads to the violence and injustice forbidden by the fifth commandment. 318 Avarice, like fornication, originates in the idolatry prohibited by the first three prescriptions of the Law. 319 The tenth commandment concerns the intentions of the heart; with the ninth, it summarizes all the precepts of the Law.