What were the early christians activities and their responsibilities?

Still pertinent to our lives today, the book of Acts journals the Godly successes of the first-century believers. With perfection and detail accompanying eight sections of scripture, eight verses conclude and summarize the progression of Christian rise and expansion.

Regarding "rise," a great Bible scholar stated that our challenge is to elevate our living up to the level of God's Word. Regarding "expansion," as we live God's Word, holding it forth, God gives the increase. His Word never returns void, and miraculous results are produced according to His will.

The first concluding summary is in Acts 2, following a passage detailing the believers continuing in Biblical teaching and study, fellowshipping from house to house, and in prayers.

Acts 2:47 "Praising God, and having favour with all the people. And the Lord added to the church daily such as should be saved."

For greater depth and detail search for "The Rise and Expansion of the Christian Church"