Contradiction with Romans 14:5
While Haggai 2:18 emphasizes laying a specific date to reflect on Israel's obedience and God's blessings, Romans 14:5 supports individual freedom in deciding which days are considered significant, suggesting a personal judgment rather than a commanded observation.
Romans 14:5: One man esteemeth one day above another: another esteemeth every day [alike]. Let every man be fully persuaded in his own mind. [fully persuaded: or, fully assured]