A. W. Tozer 
The Menace of the Religious Movie [EPUB ebook] 

When God gave to Moses the blueprint of the Tabernacle He was careful to include every detail; then, lest Moses should get the notion that he could improve on the original plan, God warned him solemnly, “And look that thou make them after their pattern, which was shown thee in the mount.” God, not Moses, was the architect. To decide the plan was the prerogative of the Deity. No one dare alter it so much as a hairbreadth.

The New Testament Church also is built after a pattern. Not the doctrines only but the methods are divinely given. The doctrines are expressly stated in so many words. Some of the methods followed by the early New Testament Church had been given by direct command; others were used by God’s specific approval, having obviously been commanded the apostles by the Spirit. The point is that when the New Testament canon was closed the blueprint for the age was complete. God has added nothing since that time.

From God’s revealed plan we depart at our peril. Every departure has two consequences, the immediate and the remote. The immediate touches the individual and those close to him; the remote extends into the future to unknown times, and may expand so far as to influence for evil the whole Church of God on earth.