During Corinthian Christian worship, the people sat according to 1 Corinthians 14.30, "if a revelation comes to someone who is sitting down, the first speaker should stop." Those eating meals in the temple reclined as in 1 Corinthians 8.10 "For if someone with a weak conscience sees you, with all your knowledge, eating in an idol's temple, won't that person be emboldened to eat what is sacrificed to idols?" Any latecomer to Lucian's Symposium (125-180 AD) a pagan novelist is offered a place to sit (which he declines) though this is questionable. The larger numbers must have meant that Christians did not have enough space (for all) to recline during the meal.
Standing in the refectory, they formed choirs for Corinthian Christian worship, one line of men and one of women, singing hymns to God, sometimes antiphonally, keeping time with hands and feet rapt with enthusiasm. Then they mixed and became a single choir, a copy of the one of old by the Red Sea, where a command of God made the sea a source of salvation to one party, of punishment to the other. There, the ancient choir sang hymns of thanksgiving to God their Savior, the men led by the prophet Moses, the women by the prophetess Miriam. Do we have an equivalent in our worship of the praise times of Moses and Miriam?