They devoted themselves to the apostles' teaching and to fellowship, to the breaking of bread and to prayer. (NIV)

And they steadfastly persevered, devoting themselves constantly to the instruction and fellowship of the apostles, to the breaking of bread [including the Lord's Supper] and prayers. (AMP)

And they continued stedfastly in the apostles' doctrine and fellowship, and in breaking of bread, and in prayers. (KJV)