Abstinence and Redemption

Leviticus 25 has God expanding on the commandment to keep the Sabbath, which has connections to the root word Shev (to sit or rest) but also to Sheva (seven). Now, it’s pretty explicit at other points, like in the Friday night prayer, Veshamru, from Exodus 31:16-17, that Shabbat means the 7th day of the week and it exists because there were 6 days of creation and then God rested on the seventh day (shavat vayinafash). Since it’s necessary for redemption and the affirmation of faith, God goes so far as to put a death penalty on those who work on Shabbat. So it’s clear that we need to rest every seven days.

Then here in Leviticus, the chapter starts by saying that the land (nature) needs a Shabbat too, which they say is equivalent to a Shabbat for God. It’s called a shabbaton. Just like one can’t do something that will make another transgress on a mitzvah, by working the land we are making the land work, which is a violation of the land’s Shabbat. So God/Nature needs to rest every seven years.
Then it indicates that property needs to be redeemed too. It seems to be some sort of burden on property to be owned, but then again in those days property included slaves, so it’s our responsibility to redeem owned property every 7 shabbaton years, that’s every 49 years. Property needs redemption every 7×7 years.
The chapter also mentions Yom Kippur, the Shabbat of Shabbats, when our souls are redeemed. This happens yearly on the 7th month on the tenth day. The ten days leading up to it are the 10 days of redemption. 7x7x7 = 343, 10 days short of the lunar calendar year. Even if that’s a stretch, the numbers retain their significance regarding redemption. So souls need redemption every 7x7x7 days. 
To redeem is literally, to buy back or exchange. So what is all this talk of redemption regarding shabbat, redemption for land, of souls? What is this exchange?
The end of the chapter talks about when people have rights to buy back property they’ve sold. The connection I draw is that all things have a right place. Property is meant to be with its original owner, and we and God are meant to be in a state of rest. When someone is poor they have to sell off stuff but their priority should be to get it back. We sell our time because we have to, land is worked out of necessity, but those things are in constant need of redemption. In that way, a person without rest is therefore like a person without a home.
While all things must be redeemed every 50th year, they may be redeemed earlier. This could teach us that while we rest once a week and we rest the land once every seven years as a minimum (under penalty of death), we should be striving for more.