The way of a guilty man is crooked, but the conduct of the innocent is upright.
Cross References
Proverbs 2:15whose paths are crooked and whose ways are devious.
Proverbs 21:9Better to live on a corner of the roof than to share a house with a quarrelsome wife.
 Treasury of Scripture
The way of man is fraudulent and strange: but as for the pure, his work is right.
way
Genesis 6:5,6,12
 And GOD saw that the wickedness of man was great in the earth, and that every imagination of the thoughts of his heart was only evil continually… 
Job 15:14-16
 What is man, that he should be clean? and he which is born of a woman, that he should be righteous? … 
Psalm 14:2,3
 The LORD looked down from heaven upon the children of men, to see if there were any that did understand, and seek God… 
but
Proverbs 15:26
 The thoughts of the wicked are an abomination to the LORD: but the words of the pure are pleasant words.
Proverbs 30:12
 There is a generation that are pure in their own eyes, and yet is not washed from their filthiness.
Daniel 12:10
 Many shall be purified, and made white, and tried; but the wicked shall do wickedly: and none of the wicked shall understand; but the wise shall understand.