Jeremiah 3
Physical adultery is unfaithfulness to your mate. Spiritual adultery is unfaithfulness to God. Its roots are in the mind. If a man’s mind refuses to entertain impure thoughts, He won’t be tempted to commit adultery. His battlefield is his mind.
Adultery reveals that he allowed his thought life to be unfaithful to his wife. Jesus zeroed in on the issue when He declared, “If a man looks with lust upon a woman, he has already committed adultery in his heart.” Physical adultery is evidence that the man’s mind was dwelling on lustful thoughts.
James said, “But every man is tempted, when he is drawn away of his own lust, and enticed. Then when lust hath conceived, it bringeth forth sin: and sin, when it is finished, bringeth forth death.” [James 1:14,15]
A man is wise to keep His mind stayed upon the Lord. [Isaiah 26:3]