"This book of the law shall not depart out of thy mouth; but thou shalt meditate therein day and night, that thou mayest observe to do according to all that is written therein: for then thou shalt make thy way prosperous, and then thou shalt have good success. Have not I commanded thee?..." (Joshua 1:9-10a)
This passage used to trouble me so much as a kid. I'd read the words "day and night" and think I had no freedom of mind at all. That I'd have to be reciting the word of God, saying it over and over in my head barring all other thoughts, all the livelong day. Can you imagine thinking this was fun and, not only that, the "proper" way to do the whole mental thing?
"But when ye pray, use not vain repetitions, as the heathen do: for they think that they shall be heard for their much speaking." (Matthew 6:7)
Then again, prayer was likewise a similar torment. If I had all these thoughts, all the time, to somehow supplant and then fill in with the Word of God (i.e. "the book of the law"), I couldn't begin to dig beyond my shallow wants (which themselves slowly began to feel like sin) to truly get to the bottom of prayer—God's way. The answer is this: childlikeness. I believe Jesus aims to bring us back to childlikeness with every action and thought and moment. Life is simple for a child.
"And said, Verily I say unto you, Except ye be converted, and become as little children, ye shall not enter into the kingdom of Heaven." (Matthew 18:3)
But first, a little more elucidation on the whole "Theonomy" thing.
The idea intrigues me because simply distilled, it's a hivemind as facilitated by the Holy Spirit. At least that's my interpretation. You could easily cast this into the sea of subjectivity. But if you know the same Holy Spirit as do I, you'll see what I'm saying. "If we walk in the light" says John "as He is in the light, we have fellowship with one another..." (1 John 1:7) This is the whole point of what Jesus came to earth to do. To unite us under the overarching banner of God's love. To (re)make us into the children of the Most High from Whose Grace we'd fallen. And then have us go about our business. It all sounds like so much dystopian conspiracy. Or! It could be the most fun you'd ever have on this earth. I feel, feel it's the latter.
But before one can "feel" it, you must know the words. See (and meditate on) the passage at the top of the page.