Contradiction with Deuteronomy 23:3
Nehemiah 13:1 is based on this verse which forbids Ammonites and Moabites, thus their initial inclusion contradicts their later expulsion in Nehemiah 13:1.
Deuteronomy 23:3: An Ammonite or Moabite shall not enter into the congregation of the LORD; even to their tenth generation shall they not enter into the congregation of the LORD for ever:
Contradiction with Ruth 1:4-16
Ruth, a Moabite, is welcomed and becomes an ancestor of David, contradicting the exclusion in Nehemiah 13:1.
Ruth 1:4-16: And they took them wives of the women of Moab; the name of the one [was] Orpah, and the name of the other Ruth: and they dwelled there about ten years.
Contradiction with Isaiah 56:3-7
This passage mentions that foreigners can join themselves to the Lord, which would oppose the exclusion of certain peoples in Nehemiah 13:1.
Isaiah 56:3-7: Neither let the son of the stranger, that hath joined himself to the LORD, speak, saying, The LORD hath utterly separated me from his people: neither let the eunuch say, Behold, I [am] a dry tree.
Paradox #1
Nehemiah 13:1 refers to the exclusion of certain groups from the assembly of God. A potential contradiction could be that earlier parts of the Bible mention these groups either being included or treated differently in various contexts, leading to an inconsistency in how they are viewed or integrated within the community.
Paradox #2
This verse might be seen as morally inconsistent because it involves excluding certain groups of people based on their ancestry. This could conflict with other teachings in the Bible that emphasize love, inclusion, and acceptance of all people, regardless of background.