There are not actual corners on a sphere or in the world. This is an expression that refers to the entire world, perhaps referring to the four compass directions. In Biblical times, it was understood that the world was round (see Isaiah 40:22). The idea that people in Biblical times believed the earth was flat is a myth.

Your problem is you don’t not know what a metaphor is or a figure of speech so you post garbage trying to make yourself look clever. Youu are You are just embarrassing yourself.