Is that all the Apostles did?
Is that all the Apostles did?
I don't believe so. First they preached the Good news, and when those hearing believed, I imagine the first thing they thought to ask was that question - I know I would have.
Again, once one becomes a Christian, and saved, they are like babies who need nourishment - and that's what the Apostles fed them. None of the letters in the NT were written to unbelievers, just believers. Non-believers had to have the Gospel proclaimed to them, not nourishment, for they had to have belief first.