You may need to supply the words that have been omitted in this ellipse. What they devoted themselves to doing is stated in verse 42. Alternate translation: "they devoted themselves to the apostles' teaching with one purpose in the temple"
# with one purpose
This phrase translates a word that speaks of people who agree with each other and who work together to accomplish a common purpose.
Bread was part of their meals. Alternate translation: "They also ate meals together in their homes" (See: [[rc://en/ta/man/translate/figs-synecdoche]])