Acts says they devoted themselves to the apostles’ teaching and the fellowship (Acts 2:42). It also lists “the breaking of bread” and “the prayers” (Acts 2:42).
In Acts 2:42–47 Luke sketches what daily life looked like after the first wave of new believers in Jerusalem. The group keeps showing up for teaching, shared life, meals, and prayer, and their public life is marked by a sober sense of awe and by striking deeds done through the apostles. This paragraph comes right after Peter’s public message at Pentecost and the report of many being added (2:1–41). It functions as a summary snapshot that shows what the new community actually does in response to that moment.
Luke presents this as a summary snapshot of what the Jerusalem believers kept doing “day by day” after Pentecost (verses 42, 46–47). The community’s life has recognizable anchors: the apostles’ teaching, shared participation in one another’s lives, meals (“breaking bread”), and prayers (verse 42). Their shared life is not only private.
A careful answer keeps the immediate passage, the book's argument, and the whole-Bible storyline together, so the question is answered in context instead of as a detached idea.
Start with Acts 2:42, then read the surrounding section so the answer stays connected to the passage's flow.
42They continued steadfastly in the apostles` teaching and fellowship, in the breaking of bread, and prayer.