Contradiction with Matthew 14:30
While Mark 6:50 emphasizes reassurance with "Be of good cheer: it is I; be not afraid," Matthew 14:30 describes Peter's fear and beginning to sink, highlighting fear rather than comfort.
Matthew 14:30: But when he saw the wind boisterous, he was afraid; and beginning to sink, he cried, saying, Lord, save me. [boisterous: or, strong]
Contradiction with 2 Timothy 1:7
Mark 6:50 suggests not to fear as a directive from Jesus, but 2 Timothy 1:7 states that God has not given a spirit of fear, implying fear should not exist in the first place.
2 Timothy 1:7: For God hath not given us the spirit of fear; but of power, and of love, and of a sound mind.
Contradiction with John 16:33
In Mark 6:50, fear is addressed with immediate reassurance, whereas John 16:33 speaks of tribulation in the world but offers peace in Jesus, implying a more enduring struggle rather than instant relief.
John 16:33: These things I have spoken unto you, that in me ye might have peace. In the world ye shall have tribulation: but be of good cheer; I have overcome the world.