Contradiction with Proverbs 7:19
Proverbs 7:20 implies the husband is away for a long time, while verse 19 suggests his absence is shorter with "he is not at home."
Proverbs 7:19: For the goodman [is] not at home, he is gone a long journey:
Contradiction with Matthew 6:34
Proverbs 7:20 speaks of a certain future day and time, contradicting Matthew's notion of not worrying about tomorrow.
Matthew 6:34: Take therefore no thought for the morrow: for the morrow shall take thought for the things of itself. Sufficient unto the day [is] the evil thereof.
Contradiction with James 4:14
Proverbs 7:20 assumes precise knowledge of the future ("appointed day"), conflicting with James stating life's uncertainty.
James 4:14: Whereas ye know not what [shall be] on the morrow. For what [is] your life? It is even a vapour, that appeareth for a little time, and then vanisheth away. [It...: or, For it is]
Contradiction with Ecclesiastes 3:1
Proverbs 7:20 specifies a particular event in the future, while Ecclesiastes speaks of a season for everything without specifics.
Ecclesiastes 3:1: To every [thing there is] a season, and a time to every purpose under the heaven: