You may agree that to learn about Jesus's sayings you need to be taught by an early church father, an example may be John Chrysostom of about 4th century A.D. You may read from a link below an explanation of Sermon on the Mount of Matthew 5. 1,2. until the end of Matthew 7. 28.-Part of.-Homily XV.-Matt. V. 1, 2.-"And Jesus seeing the multitudes went up into the mountain, and when He was set, His disciples came unto Him. And He opened His mouth, and taught them saying, Blessed," etc.-See how unambitious He was, and void of boasting: in that He did not lead people about with Him, but whereas, when healing was required, He had Himself gone about everywhere, visiting both towns and country places; now when the multitude is become very great, He sits in one spot: and that not in the midst of any city or forum, but on a mountain and in a wilderness; instructing us to do nothing for display, and to separate ourselves from the tumults of ordinary life,581and this most especially, when we are to study wisdom, and to discourse of things needful to be done.-Source http://www.ccel.org/ccel/schaff/npnf110.iii.XV.html

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All guessed.