Do This until I Come, Continue Steadfastly

Acts 2:41-42

 2:41   Those then who received his word were baptized, and there were added on that day about three thousand souls.

 2:42   And they continued steadfastly in the teaching and the fellowship of the apostles, in the breaking of bread and the prayers.

Eph 3:3-5 That by revelation the mystery was made known to me, as I have written previously in brief,

 3:4   By which, in reading it, you can perceive my understanding in the mystery of Christ,

 3:5   Which in other generations was not made known to the sons of men, as it has now been revealed to His holy apostles and prophets in spirit,