system
A chat on 4chan
human
Sounds like the Biblical God. Biblical God could show up in many forms in the OT. 

We can see elements of God through these appearances. In the fiery pillar and tempest, we see God’s power. When He appears a man to Abraham, He reveals He has elements of His character that are similar to mankind, meaning He made us in His image. When He wrestles with Jacob, He shows His willingness to wrestle with us, especially in the moments we feel most like running away.
gpt
Also sounds like demons. Demons will appear as light to deceive, it's literally in the bible