Contradiction with Proverbs 1:5
Proverbs 1:5 suggests a wise person will hear and increase learning, which contrasts with Acts 8:30 where understanding is questioned by Philip.
Proverbs 1:5: A wise [man] will hear, and will increase learning; and a man of understanding shall attain unto wise counsels:
Contradiction with 1 Corinthians 2:14
1 Corinthians 2:14 suggests that a natural person does not accept spiritual things, potentially contrasting with the eunuch's attempt to understand scripture in Acts 8:30.
1 Corinthians 2:14: But the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him: neither can he know [them], because they are spiritually discerned.