The mustard seed is seen growing after an abnormal fashion, showing Satan's success in stopping Christian from bearing fruit through causing and unnatural growth in their ranks. And not only so, but the mustard seed is seen devoloping so abnormally that it eventually becomes a tree; and this tree is seen to be of such a nature that " the birds of the air ," individuals doing the work of Satan, found a lodging place in the braches .
There are multiplied warnings numerous places in Scripture concerning false teachers who would arise and teach " perverce things," Particularly related to the faith," THE WORD OF THE KINGDOM". And these false teachers would arise, not from the world, but from Christendom itself. These false teachers would arise from the ranks of Christians, in the Churches( Acts 20:29-32; cf. 1 Tim.4:1-3; 2 Tim.2:8,18; 3:7,8; 4:1-4; 2 Peter 2:1ff; Jude 3ff ).