The Catechism in Questions & Answers

363. What is the significance of the Ninth and Tenth Commandments in the New Testament?

If sinful craving is not restrained, it will soon be put into deed. The consequences are described in James 1: 15: “Then, when desire has conceived, it gives birth to sin; and sin, when it is full-grown, brings forth death.”
Galatians 5: 19-25 shows that sinful cravings lead to sinful actions. These are described as the “works of the flesh”. The Bible counters these cravings with the term “self-control”. This is manifested in moderation and abstinence.

“Now the works of the flesh are evident, which are: adultery, fornication, uncleanness, lewdness, idolatry, sorcery, hatred, contentions, jealousies, outbursts of wrath, selfish ambitions, dissensions, heresies, envy, murders, drunkenness, revelries, and the like; of which I tell you beforehand, just as I also told you in time past, that those who practise such things will not inherit the kingdom of God. But the fruit of the Spirit is love, joy, peace, longsuffering, kindness, goodness, faithfulness, gentleness, self-control. Against such there is no law. And those who are Christ’s have crucified the flesh with its passions and desires. If we live in the Spirit, let us also walk in the Spirit.”
Galatians 5: 19-25