Bruce S. Bertram from The Word of God Ministries and http://www.wholebible.com compares the first sermon on the mount with the second. "Second?" you say? Absolutely. Matthew 5, 6, and 7 is simply a repeat of what God has been saying all along, and what He preached and wrote on Mt. Sinai. Jesus is correcting man's interpretations with the second sermon, not changing what He'd given already. Men change; God is unchanging. Bruce shows the continuity of the message, and blows up modern interpretations concerning the law yet again by simply connecting His Words together as they are supposed to be connected.