John Gill Commentary Mark 14:23

"And he took a cup, and when he had given thanks, he gave to them: and they all drank of it." — Mark 14:23 (ASV)

And he took the cup, and when he had given thanks
Over it, and for it, by blessing it, and appropriating it to the present use and service: he gave it to them ;
his disciples, and they all drank of it ;
Judas, as well as the rest, as he bid them do; (See Gill on Matthew 26:27).