Contradiction with Isaiah 56:2
This verse states that keeping the Sabbath is a blessed act, which appears to contradict Nehemiah 13:18, where breaking the Sabbath results in bringing more wrath upon Israel.
Isaiah 56:2: Blessed [is] the man [that] doeth this, and the son of man [that] layeth hold on it; that keepeth the sabbath from polluting it, and keepeth his hand from doing any evil.
Paradox #1
The moral conflict in Nehemiah 13:18 might arise from the emphasis on strict Sabbath observance versus the need for flexibility and compassion in certain situations. On one hand, there is a strict rule to rest on the Sabbath as a holy day. On the other hand, sometimes people or communities might have urgent needs on this day, which could create a tension between following the rule and addressing those needs.