# took a cup

"picked up a cup of wine"

# when he had given thanks

"when he had given thanks to God"

# he said

"he said to his apostles"

# share it among yourselves

They were to share the contents of the cup, and not the cup itself. Alternate translation: "share the wine in the cup among yourselves" or "each of you drink some of the wine from the cup" (See: [[rc://en/ta/man/jit/figs-metonymy]])