'Stomped' in the Bible

Why are your clothes red? Why do you look like someone who has stomped on grapes in a vat?

"I have stomped grapes in the winepress all by myself; no one from the nations joined me. I stomped on them in my anger; I trampled them down in my rage. Their juice splashed on my garments, and stained all my clothes.

(Samek) He rounded up all my mighty ones; The Lord did this in my midst. He summoned an assembly against me to shatter my young men. The Lord has stomped like grapes the virgin daughter, Judah.

Then the winepress was stomped outside the city, and blood poured out of the winepress up to the height of horses' bridles for a distance of almost two hundred miles.