Six years plant six years cut from the vines the 7th should be a shabbos l'Hashem. Again repeated 7th year shabbos shaboson - like yom kippur? - l'Hashem.
The 6thyr triple bounty is ecpressed interestingly as well - v'tzivisi es birchosi - I will command my blessing? - since when do blessings need mitzvos?
I'm b'chukosai teileichu - the chok here is specifically Ameilus baTorah, as that is not a logically driven mtzvah.
The Mahril diskin & R' Moshe feinstein z"l both say that the torah is teaching us that shmittah must be l'Hashem. This is not about land regaining nutrients - you don't go 6 straight years fpr that. And the 6th year bracha dispells that notion as well - after six straight years the land can produce a triple crop!
This not about being lazy either. The Torah tells us to work the land the six years before, so, similar to shabbos. Those that work must take off 1 in 7 - lshem Hashem, & those that don't work all six, the Torah stresses that still the 7th should be a shabbos of shabbosos - an extra resting, recognizably l'Hashem.
This is a chok which establishes a notably greater relationship of loyalty from the subjects to their King. their doing this with 'no questions asked. Just because the King commanded.
this explains the strange language of blessing as well. Many time a reward can be witheld & blessing left unfulfilled due to some 'kitrug' against the recepient. However here Hashem tells us of the midah k'neged midah, - if you keep shmittah l'Hashem - with a 'no questions asked' approach just as Hashem commanded, so to I WILL COMMAND MY BLEESING, & it will respond against all reason to be witheld or cancelled, against any 'kitrug'. Just because Hashem commanded.
we don't have shmittah d'oraisah anymore, but we still have the opportunity for I'm b'chukpsai teileichu. In that merit may all the blessing come - no questions asked.
If you keep the chok of torah
