As Paul closes his last thought from verse 7 being rooted and built up in Christ and abounding in Him and through Him in our lives, he turns his attention back to a word of caution. Remember, the first-century church at this time was facing a form of heresy known as Gnosticism. This idea of a higher level of knowledge is reserved for a select group of people and only a few possessed. It would leave out the masses, which wanted to attain this higher knowledge, but couldn’t grasp it.