Let's start this meeting with God by openly professing to one another and to God:

Our help is in the Name of the Lord, Who made heaven and earth.
Beloved, grace and peace be to you from God our Father, and the Lord Jesus Christ, through the mighty working of God the Holy Spirit.
Amen.

Psalm of praise: 136:1, 2, 3
Prayer
Psalm 51:8
Scripture reading:      1 Corinthians 10
Scripture text:            1 Corinthians 10:8; Catechism Lord's Day 41

We must not indulge in immorality as some of them did, and twenty-three thousand fell in a single day. (1 Cor. 10:8 ESV)
 
The seventh commandment is one of the commandments that, when it is not kept, causes most harm to our neighbours and ourselves. From this commandment we learn that the Lord becomes most upset about any form of unchastity, because this commandment symbolises the relationship between the Lord and his church.
 
1. The Lord's view on unchastity
2. Marriage is an ordinance of creation
 
1. The Lord's view on unchastity

This commandment deals with a matter on a physical level, but at the same time deals with the spiritual relationship between the Lord and us.
Since the very beginning the Lord has seriously warned against transgression of this commandment.
The death penalty and the sentence of being burnt to death are of course symbolic of eternal death and hell when people persist in committing these sins, because it reflects violation of fellowship with the Lord.
 
The Lord tells us why He takes this sin so seriously:
Two Scripture passages especially are very clear about this issue.
For this is the will of God, your sanctification: that you abstain from immorality;
 
In summary:
The Lord teaches us that He does not want to see our bodies being defiled, because they are his temples and they are holy to Him. The Holy Spirit lives in our bodies and therefore we should keep them pure and holy.

2. Marriage is an ordinance of creation

Take note of how the first marriage was established. The Lord made one wife for Adam. They had to live together in a loving relationship. With this the Lord laid down a rule (ordinance) for man in the course of history: one man marries one woman.
The Lord Jesus once said to a group of men around him:

You have heard that it was said, 'You shall not commit adultery.' But I say to you that every one who looks at a woman lustfully has already committed adultery with her in his heart. (Matthew 5:27, 28).
The Lord does not allow any arguing about this.
The seventh commandment is an appeal to us to live a holy life.
All people are not equally guilty in respect of this commandment, and therefore we should also consider the grace contained in this commandment.
This commandment also calls for education. We have children growing up.
This commandment also calls for repentance.
The above makes one think of when the Lord warned his people against the foreign influences of other nations and cultures.
And you will accept their daughters, who worship other gods, as wives for your sons. Then they will cause your sons to commit adultery against me by worshiping other gods (Exodus 34:16 NLT).
 
Parties and cults are not the only things that threaten our children's upbringing. The TV and radio do the same.
The Lord Jesus is not unmerciful against people who sin against this commandment but who deeply regret what they have done and truly repent.
As people who have been renewed through the salvation accomplished by Jesus we should fight against all forms of unchastity.
Let's read together Catechism Lord's Day 41.

108. Q. What does the seventh commandment teach us?
A. That all unchastity is cursed by God.[1] We must therefore detest it from the heart[2] and live chaste and disciplined lives, both within and outside of holy marriage.[3]

[1] Lev. 18:30; Eph. 5:3-5. [2] Jude 22, 23. [3] I Cor. 7:1-9; I Thess. 4:3-8; Heb. 13:4.

109. Q. Does God in this commandment forbid nothing more than adultery and similar shameful sins?
A. Since we, body and soul, are temples of the Holy Spirit, it is God's will that we keep ourselves pure and holy. Therefore He forbids all unchaste acts, gestures, words, thoughts, desires,[1] and whatever may entice us to unchastity.[2]

[1] Matt. 5:27-29; I Cor. 6:18-20; Eph. 5:3, 4. [2] I Cor. 15:33; Eph. 5:18.

Amen.

Closing prayer
Closing hymn: Psalm 146:8

The grace of the Lord Jesus Christ, and the love of God and the fellowship of the Holy Spirit be with you all.
Amen.
  
Dr MJ du Plessis
Reformed Church Bellville
Date: 27 March 2005 (evening)