1 Thessalonians 4:1  Finally, then, brothers, we ask and urge you in the Lord Jesus, that as you received from us how you ought to walk and to please God, just as you are doing, that you do so more and more. [2] For you know what instructions we gave you through the Lord Jesus. [3] For this is the will of God, your sanctification that you abstain from sexual immorality; [4] that each one of you know how to control his own body in holiness and honor, [5] not in the passion of lust like the Gentiles who do not know God; [6] that no one transgress and wrong his brother in this matter, because the Lord is an avenger in all these things, as we told you beforehand and solemnly warned you. [7] For God has not called us for impurity, but in holiness. [8] Therefore whoever disregards this, disregards not man but God, who gives his Holy Spirit to you.

Living to please God means pursuing holiness through the Lord Jesus by His Holy Spirit.
    I. Whose idea is this anyhow?
           A. Colossians 1:9-12
           B. Ephesians 5:8–10
           C. Psalm 147:11
           D. Hebrews 13:21
           E. 2 Corinthians 5:9
   II. How do I find God’s will, His calling?
  III. What is Sanctification?
 Q. 35. What is sanctification?
 A. Sanctification is the work of God’s free grace, whereby we are renewed in the whole man after the image of God, and are enabled more and more to die unto sin, and live unto righteousness.
  IV. How do I fight temptation to sexual sin?