Contradiction with Luke 5:4
This verse talks about Jesus instructing to launch into the deep for a catch, while John 21:8 depicts disciples drawing fish into the ship near the shore, indicating different fishing scenarios.
Luke 5:4: Now when he had left speaking, he said unto Simon, Launch out into the deep, and let down your nets for a draught.
Contradiction with Matthew 14:33
This verse describes disciples worshiping Jesus after he walked on water, contrasting John 21:8 where they do not recognize Jesus until after the catch.
Matthew 14:33: Then they that were in the ship came and worshipped him, saying, Of a truth thou art the Son of God.
Contradiction with Mark 8:21
Here Jesus reminds the disciples of a previous miracle of feeding, which contrasts with their unawareness and surprise in John 21:8 at the abundance of fish.
Mark 8:21: And he cometh to Bethsaida; and they bring a blind man unto him, and besought him to touch him.
Contradiction with Mark 16:14
Jesus reproaches the disciples for their unbelief, whereas in John 21:8, disciples seem obedient and responsive without mention of lack of faith.
Mark 16:14: Afterward he appeared unto the eleven as they sat at meat, and upbraided them with their unbelief and hardness of heart, because they believed not them which had seen him after he was risen. [at meat: or, together]
Contradiction with Matthew 4:18
In Matthew, the first calling of the disciples involves casting nets in a different context, whereas John 21:8 portrays them hauling a significant catch post-resurrection.
Matthew 4:18: And Jesus, walking by the sea of Galilee, saw two brethren, Simon called Peter, and Andrew his brother, casting a net into the sea: for they were fishers.
Contradiction with Matthew 17:21
Refers to fasting and prayer as means of expelling demons, which contrasts with the miraculous catch in John 21:8 achieved at Jesus' word, showing different expressions of spiritual power.
Matthew 17:21: Howbeit this kind goeth not out but by prayer and fasting.