Contradiction with Proverbs 11:14
This verse mentions the value of having many counselors, which may contradict Mark 6:21 where Herodias' daughter acts on the advice of her mother alone.
Proverbs 11:14: Where no counsel [is], the people fall: but in the multitude of counsellors [there is] safety.
Contradiction with 1 Corinthians 14:40
This verse calls for doing all things decently and in order, which could contradict the disorder and consequence stemming from the feast in Mark 6:21.
1 Corinthians 14:40: Let all things be done decently and in order.
Contradiction with Ephesians 5:18
Advises against being drunk with wine, a situation implied in Mark 6:21 during Herod's birthday feast.
Ephesians 5:18: And be not drunk with wine, wherein is excess; but be filled with the Spirit;
Contradiction with Proverbs 20:1
Warns about the deceitfulness of wine, potentially contradicting the setting of Mark 6:21 where wine could impair judgment.
Proverbs 20:1: Wine [is] a mocker, strong drink [is] raging: and whosoever is deceived thereby is not wise.
Contradiction with Ecclesiastes 7:5
Suggests it is better to hear the rebuke of the wise, which contrasts with the failure to heed John's wise counsel before his execution celebrated in Mark 6:21.
Ecclesiastes 7:5: [It is] better to hear the rebuke of the wise, than for a man to hear the song of fools.