Contradiction with 1 Corinthians 14:33
Explains that God is not the author of confusion, whereas Daniel 10:21 implies a complex, hidden conflict among heavenly beings.
1 Corinthians 14:33: For God is not [the author] of confusion, but of peace, as in all churches of the saints. [confusion: Gr. tumult, or, unquietness]
Contradiction with Amos 3:7
Suggests God reveals His secrets to prophets, while Daniel 10:21 mentions a prophecy only partially explained and limited to Daniel.
Amos 3:7: Surely the Lord GOD will do nothing, but he revealeth his secret unto his servants the prophets.
Contradiction with John 16:13
Promises the Spirit of truth will guide into all truth, suggesting clarity, while Daniel 10:21 implies limited understanding given to Daniel.
John 16:13: Howbeit when he, the Spirit of truth, is come, he will guide you into all truth: for he shall not speak of himself; but whatsoever he shall hear, [that] shall he speak: and he will shew you things to come.
Contradiction with Colossians 2:18
Warns against worshiping angels, contrasting with Daniel 10:21 which presents an angelic messenger in a significant role.
Colossians 2:18: Let no man beguile you of your reward in a voluntary humility and worshipping of angels, intruding into those things which he hath not seen, vainly puffed up by his fleshly mind, [beguile...: or, judge against you] [in a...: Gr. being a voluntary in humility]
Contradiction with Hebrews 1:14
Describes angels as ministering spirits, while Daniel 10:21 indicates a more combative and strategic role of angels.
Hebrews 1:14: Are they not all ministering spirits, sent forth to minister for them who shall be heirs of salvation?