Contradiction with John 1:25
This verse questions John's authority from a different perspective, asking why he baptizes if he is not the Christ, Elijah, or the Prophet, indicating diverse views on authoritative acts.
John 1:25: And they asked him, and said unto him, Why baptizest thou then, if thou be not that Christ, nor Elias, neither that prophet?
Contradiction with Acts 18:25
This verse speaks of Apollos learning and teaching accurately about Jesus, implying that divine knowledge isn't limited to direct heavenly revelation as Mark 11:30 suggests the question of authority.
Acts 18:25: This man was instructed in the way of the Lord; and being fervent in the spirit, he spake and taught diligently the things of the Lord, knowing only the baptism of John.