Isaiah 55:11- So shall my word be that goeth forth out of my mouth: it shall not return unto me void, but it shall accomplish that which I please, and it shall prosper in the thing whereto I sent it.

II Timothy 2:15- Study to shew thyself approved unto God, a workman that needeth not to be ashamed, rightly dividing the word of truth.

IITimothy 4:3- For the time will come when they will not endure sound doctrine; but after their own lusts shall they heap to themselves teachers, having itching ears;