[xzins]

The Sons of the Pioneers were a singing group.

The Sons of the Prophets were a band of prophets.

[hlmencken3]

This was covered in a previous FR post, believe it or not!

http://www.freerepublic.com/focus/f-religion/1263704/posts

An individual seeking prophecy must be careful to keep his motives absolutely pure. The preparations for prophecy are extremely rigorous, and without divine help, they can lead to psychosis and false visions rather than to true prophecy. Moreover, a neophyte prophet, who has not yet learned to master his gift, can easily misunderstand his revelation.

Therefore, every individual who desires to attain prophecy must have a master and guide. The function of the master is to teach the neophyte the techniques of prophecy, and help him avoid the pitfalls along the way. Those who sat at the feet of the great prophets and engaged in meditation attempting to attain prophecy were known as the "Sons of Prophets."

With the exception of Isaiah, every prophet in the Bible received his gift through his predecessors.

Even after a prophet attains a vision, he still needs a master in order to advance to higher degrees of prophecy. Like every other faculty, prophecy must be nurtured and developed.

[TrailofTears]

The sons of the prophets were a group of individuals, not necessarily the actual sons of prophets, but rather folks who followed the prophets and their teachings. They were like a seminary, or like a group of disciples of the books of prophets (one of the liturgy's of the Old Testament: Law and Prophets).