This is a metonym for eating, which was the usual way people in that day ate meals. AT: "they were eating a meal" (See: [[rc://en/ta/man/translate/figs-metonymy]])
# reclining
In Jesus' culture, when people gathered to eat, they lay down on their sides, propping themselves up on pillows beside a low table.
# hardness of heart
Jesus is rebuking his disciples because they would not believe in him. Translate this idiom so it is understood that the disciples were not believing Jesus. AT: "refusal to believe" (See: [[rc://en/ta/man/translate/figs-idiom]])