"And it came to pass, when Jesus had ended these sayings, the people were astonished at his doctrine: For he taught them as one having authority, and not as the scribes."
'these sayings' - referring to 'The Sermon on the Mount' (Matt. 5, 6, and 7).
I have sat in classes at Bible College where the teacher really knew his material and taught authoritatively. It was a blessing to say the least. It is sorta awkward when you know that class has to be 'academic' but the richness and power of the Word of God comes through the lesson (you feel like shouting amen! BUT you hold back because its a class). It is truly an amazing experience; I am not saying that every class session was like that all the time. I wonder what it would have been like to sit besides the Lord on the mount and listen to Him teach.
One thing to really be thankful for is that we do have His 'doctrine' (in the Bible - the ones He wants us to have). We have chapters 5, 6, and 7; really we have so much (66 Canonical Books in fact).
I also believe that good Bible preaching is another way of hearing the 'word of God.' I love listening to good preaching, it really feeds my soul. I am so thankful for the preaching ministry of my Pastor. Week after week he is diligent in preaching the Word (and I mean the Word - not an illustration, not story telling, just good old fashion preaching!)
I guess when I read Matt. 7:28-29, it reminds me of teachers and preachers that have invested so much of their time and talents into teaching me.