The FDS or GB is what Paul mentioned at 2 CORINTHIANS 11:13 but the whole context of the scripture is important to see what they truly are about!
The PIONEERS is what Paul mentioned at 2 CORINTHIANS 11:15
10 As the truth of Christ is in me, no man shall stop me of this boasting in the regions of Achaia. 11 Wherefore? because I love you not? God knoweth.
12 But what I do, that I will do, that I may cut off occasion from them which desire occasion; that wherein they glory, they may be found even as we.
13 For such are false apostles, deceitful workers, transforming themselves into the apostles of Christ.
14 And no marvel; for Satan himself is transformed into an angel of light.
15 Therefore it is no great thing if his ministers also be transformed as the ministers of righteousness; whose end shall be according to their works.