Contradiction with Genesis 32:30
Jacob claims to have seen God face to face, whereas John 20:14 discusses Mary Magdalene seeing Jesus but not recognizing Him immediately. This raises a contradiction in the recognition of divine figures.
Genesis 32:30: And Jacob called the name of the place Peniel: for I have seen God face to face, and my life is preserved. [Peniel: that is, The face of God]
Contradiction with Exodus 33:20
It states that no one can see God's face and live, yet John 20:14 implies divine revelation in the form of Jesus, who is not immediately recognized as divine.
Exodus 33:20: And he said, Thou canst not see my face: for there shall no man see me, and live.
Contradiction with John 1:18
This verse states that no one has seen God at any time, which contrasts with John 20:14 where Jesus, appearing after resurrection, is not recognized by Mary, despite being divine.
John 1:18: No man hath seen God at any time; the only begotten Son, which is in the bosom of the Father, he hath declared [him].
Contradiction with Acts 9:3-5
Paul immediately recognizes Jesus speaking to him in a vision, while in John 20:14, Jesus is not recognized when He appears to Mary.
Acts 9:3-5: And as he journeyed, he came near Damascus: and suddenly there shined round about him a light from heaven:
Contradiction with 1 John 4:12
It reiterates that no one has seen God, yet John 20:14 narrates a post-resurrection sighting of Jesus that was not recognized at first, bringing into question the recognition of Jesus as God.
1 John 4:12: No man hath seen God at any time. If we love one another, God dwelleth in us, and his love is perfected in us.
Contradiction with Isaiah 6:1
Isaiah sees the Lord on a throne, in contrast with John 20:14 where Jesus is standing and not recognized.
Isaiah 6:1: In the year that king Uzziah died I saw also the Lord sitting upon a throne, high and lifted up, and his train filled the temple. [his...: or, the skirts thereof]