What did worship look like in the early church?

Justin Martyr’s Description of Early Church Worship (100–165 AD)

"On the day called Sunday, all who live in cities or in the country gather together in one place, and the memoirs of the apostles or the writings of the prophets are read, as long as time permits. Then, when the reader has ceased, the president verbally instructs, and exhorts to the imitation of these good things. Then we rise together and pray, and … when our prayer is ended, bread and wine and water are brought, and the president [presider] in the manner offers prayers and thanksgivings, according to his ability, and the people assent, saying Amen! And there is a distribution [of the Eucharist] to each, and a participation of that over which thanks have been given, and to those who are absent a portion is sent by the deacons. And they who are well to do, and willing, give what each thinks fit; and what is collected is deposited with the president, who gives aid to the orphans and widows, and those who, through sickness or any other cause, are in want, and those who are in bonds [prison], and the strangers sojourning among us, and in a word takes care of all who are in need. But Sunday is the day on which we all hold our common assembly, because it is the first day on which God, having wrought a change in the darkness and matter, made the world; and Jesus Christ our Savior on the same day rose from the dead."