Wisdom Knowledge Greek Sabbath Sunday

Do the terms wisdom and knowledge in the book of Proverbs mean the same thing and are interchangeable...or do they have different meanings?? I've heard some people mention that "knowledge" could mean the understanding you get from learning, discovering, reading, studying, etc. and "wisdom" is the deeper kind of understanding that a Christian receives from the fear of God and thus understands everything in the world more fully and accurately?? So I guess one might be more "worldly" and the other more "spiritual".

I know this is a little late for this kind of question but when you get a chance could you go over the high points between Dispensational Eschatology and Reformed view of Eschatology. Just the basics, I know that you could make several messages on this subject at the least. I think I understand the difference, coming from a Baptist background but I would like to hear what you think.

Is the translation of Hebrews 1:2 of "has spoken in His Son" accurate?

Could you reinforce and explain why we should hold to the Sabbath changing from the last day of the week to first day of the week, as indicated in Scripture??