Video from Bible Nerds
"Why did Jesus spit in clay and then put it in a blind man's eyes in John 9? Bible scholar Dr. Michael Heiser discusses how it may be connected to God being depicted as the Creator in Genesis when He made man out of dust. It can also be referring to the Old Testament describing God as our potter and we're the clay. It was a sign that Jesus was God and our Creator. He also discusses cleanliness laws in Leviticus and how that might play into this." from video introduction.