Contradiction with John 14:6
Acts 18:25 states that Apollos taught accurately about Jesus, but John 14:6 emphasizes that Jesus is the way, suggesting exclusive knowledge through Jesus alone.
John 14:6: Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me.
Contradiction with Galatians 1:8
Acts 18:25 describes Apollos teaching accurately, while Galatians 1:8 warns against accepting any gospel other than the one preached by Paul.
Galatians 1:8: But though we, or an angel from heaven, preach any other gospel unto you than that which we have preached unto you, let him be accursed.
Contradiction with 1 Corinthians 1:17
Acts 18:25 highlights Apollos's zeal for teaching, whereas 1 Corinthians 1:17 downplays the importance of eloquent wisdom in the proclamation of the gospel.
1 Corinthians 1:17: For Christ sent me not to baptize, but to preach the gospel: not with wisdom of words, lest the cross of Christ should be made of none effect. [words: or, speech]
Contradiction with 1 John 2:27
Acts 18:25 mentions instruction from others, but 1 John 2:27 stresses the anointing received from God as all believers need to know.
1 John 2:27: But the anointing which ye have received of him abideth in you, and ye need not that any man teach you: but as the same anointing teacheth you of all things, and is truth, and is no lie, and even as it hath taught you, ye shall abide in him. [in him: or, in it]