Create a visual representation of the biblical verse from Luke 20:6, wherein a group of diverse men, with a significant concern on their faces debating whether to acknowledge John as a prophet. Their worry is based on the fear of being stoned by the people around them who believe John was truly a prophet. The style of this image should reflect the essence of early 20th-century art forms using primary colors, geometric shapes, and a focus on the flat two-dimensional surface similar to the style prevalent before the digital art era.