Complete Bible Study Guide
What Does the Bible Say About Unclean Thoughts?
13 Scripture references with full text and commentary
Understanding Unclean Thoughts in the Bible
Discover 16 powerful Bible verses about unclean thoughts. Study what Scripture teaches about this essential love & relationships topic.
Top 10 Verses About Unclean Thoughts
- 1Psalms 51:10
“Create in me a clean heart, O God; and renew a right spirit within me. right: or, constant”
KJV - 2Proverbs 4:23
“Keep thy heart with all diligence; for out of it are the issues of life. with: Heb. above all keeping”
KJV - 3Matthew 5:28
“But I say unto you, That whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart.”
KJV - 4Matthew 15:18
“But those things which proceed out of the mouth come forth from the heart; and they defile the man.”
KJV - 5Matthew 15:19
“For out of the heart proceed evil thoughts, murders, adulteries, fornications, thefts, false witness, blasphemies:”
KJV - 6
- 7Romans 12:2
“And be not conformed to this world: but be ye transformed by the renewing of your mind, that ye may prove what is that good, and acceptable, and perfect, will of God.”
KJV - 8Galatians 5:19
“Now the works of the flesh are manifest, which are these; Adultery, fornication, uncleanness, lasciviousness,”
KJV - 9Ephesians 4:22
“That ye put off concerning the former conversation the old man, which is corrupt according to the deceitful lusts;”
KJV - 10Philippians 4:8
“Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good report; if there be any virtue, and if there be any praise, think on these things. honest: or, venerable”
KJV
Old Testament: What Does the Bible Say About Unclean Thoughts? (2 Verses)
“Create in me a clean heart, O God; and renew a right spirit within me. right: or, constant”
“Keep thy heart with all diligence; for out of it are the issues of life. with: Heb. above all keeping”
New Testament: What Does the Bible Say About Unclean Thoughts? (11 Verses)
“But I say unto you, That whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart.”
“But those things which proceed out of the mouth come forth from the heart; and they defile the man.”
“For out of the heart proceed evil thoughts, murders, adulteries, fornications, thefts, false witness, blasphemies:”
“And he said, That which cometh out of the man, that defileth the man.”
“And be not conformed to this world: but be ye transformed by the renewing of your mind, that ye may prove what is that good, and acceptable, and perfect, will of God.”
“Now the works of the flesh are manifest, which are these; Adultery, fornication, uncleanness, lasciviousness,”
“That ye put off concerning the former conversation the old man, which is corrupt according to the deceitful lusts;”
“Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good report; if there be any virtue, and if there be any praise, think on these things. honest: or, venerable”
“Set your affection on things above, not on things on the earth. affection: or, mind”
“Mortify therefore your members which are upon the earth; fornication, uncleanness, inordinate affection, evil concupiscence, and covetousness, which is idolatry:”
“But every man is tempted, when he is drawn away of his own lust, and enticed.”
How to Study What the Bible Says About Unclean Thoughts
- 1
Begin by reading through every verse listed on this page, noting which ones speak most directly to your current season of life. Write them down and revisit them throughout the week.
- 2
Use a concordance or the search tools on this site to find additional passages about unclean thoughts. Look for patterns across both the Old and New Testaments to gain a complete picture of what God reveals on this subject.
- 3
Study the context of each verse. Read the surrounding chapter to understand who was speaking, who the audience was, and what circumstances prompted the passage. Context prevents misapplication.
- 4
Memorise at least one key verse about unclean thoughts and meditate on it daily. Scripture memory transforms thinking and equips you to apply God's Word in real-time situations.
Practical Application
Studying what the Bible says about unclean thoughts is only the beginning. Scripture is meant to be lived out in daily obedience and faith. Here are practical steps to apply these truths:
Identify one area of your life where the biblical teaching on unclean thoughts needs to be applied more consistently. Write a specific, actionable step you can take this week.
Share what you have learned about unclean thoughts with a fellow believer or in a small group setting. Teaching others solidifies your own understanding and encourages mutual growth.
Pray through the key verses about unclean thoughts, asking God to reveal how His Word applies to your relationships, decisions, and daily habits.
How Well Do You Know What the Bible Says About Unclean Thoughts?
You have studied 13 verses about unclean thoughts. Now test your knowledge with chapter-by-chapter quizzes covering the books where these verses appear.