Summary: Temptation is a powerful thing, but the consequences of giving in to sexual sin are even greater.

Why avoid sexual sin?

I Corinthians 6:18

1. Illus. of my daughter

• When our children were at home, we had what we referred to as the house rules. If you were going to live in our house, then you had to tell us where you were going and who you were going with, etc.

• As an older teenager, often chafed against our house rules.

• Told me one day, “You and mom are just the fun-Nazis, trying to make sure I don’t have any fun in life!”

• I’m sure it seemed like it at the time!

• When she got married and became a mom, she began to understand that all those rules were for her benefit and protection.

2. Sometimes non-Christians and immature Christians get the idea that God is just a big old fun-Nazi! He has all these rules and regulations that are designed for one purpose: to keep us from having any fun! Somewhere along the way of our spiritual development, we realize our wise heavenly Father set these commands in place with His glory and our good in mind!

3. Nowhere is this principle more evident than in the area of sexual sin. One of the strongest desires God has given us is the desire for sex! God has placed around that desire a very distinct boundary: no sex outside marriage, period. That means no premarital sex, no extramarital sex, no sex between people of the same gender.

4. God did not do this because He is some sort of cosmic sadist: “I’m going to give them this desire and then make them express this desire only in marriage because I want to see them suffer!” Rather, God did this for our protection!

5. I want to show you today what happens when married people ignore God’s boundary in this area. The Bible says there are some terrible consequences to ignoring God’s sexual boundaries.

6. What are they? Let’s look at four consequences of infidelity.


1. See Psalms 51. This took place on the occasion of David’s repentance of his sin with Bathsheba. Listen as he describes what his life was like while he was living in this sin:

• Had robbed him of his ability to see God (vs 3). Used to see God in the field, in the stars. Now all he could see was his sin!

• Had caused him to lie and act stupid (vs 6)

• Had caused him to squirm under intense conviction (vs 8)

• Lost all joy in serving God (vs 12)

2. In short, David’s sin had cost him all the spiritual blessing that he should have been enjoying as a believer!

3. Illus. of “Jeannette” (Sexual Intimacy in Marriage, pp160”)

• If you are truly a believer who is used to enjoying fellowship with God, you are in for a lot of misery. You will long to go back to the time when you could sing, "I Love You, Lord" and mean it. You will cry over songs like "He Is Lord," knowing that now He is not Lord of your life. You will become unable to give testimonies or share with other believers on anything but a surface level. You will be unable to concentrate on anything else.

• You will have lost your relationship with the Lord. And you will realize you have also lost your relationship with your husband. Either you will go through the rest of your life keeping something from him or you will eventually confess it to him and destroy him in the process.

4. Application: Habitual, rebellious sin, especially this one, robs us of our relationship with God.


1. See Matthew 19:

 Vs 3- Remember this is the central question that Jesus is answering, “what are the just grounds for divorce?

 Vs 4-6- When a husband and wife have sex, that physical union also creates a spiritual and emotional union. No law of man can do away with that!

 Vs 7-8- Moses didn’t command it, he permitted it because of your sinful hearts. Women were being thrown out for any reason, so Moses did this to make it harder.

 Vs 9- Back to original reasoning began in vs 4-6. Because that one-flesh bond is not dissolved by a piece of paper, a man who divorces his wife puts her in this situation: when she remarries (and the assumption is that she will) she is forging a new one-flesh bond while another one flesh bond still exists.

 In that context, look at the bottom line here: God permits divorce on the grounds of adultery because it erodes that one-flesh bond with our spouse. Continual adultery destroys that one flesh bond, so that it is as if we are not married anyway!

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