At the end
qets (kates)
an extremity; adverbially (with prepositional prefix) after -- + after, (utmost) border, end, (in-)finite, process.
of every seven
sheba` (sheh'-bah)
a primitive cardinal number; seven (as the sacred full one); also (adverbially) seven times; by implication, a week; by extension, an indefinite number
years
shaneh (shaw-neh')
a year (as a revolution of time) -- + whole age, long, + old, year(-ly).
thou shalt make
`asah (aw-saw')
to do or make, in the broadest sense and widest application
a release
shmittah (shem-it-taw')
remission (of debt) or suspension of labor) -- release.