Verb · A primitive root
A primitive root; to jut over or exceed; by implication, to excel; (intransitively) to remain or be left; causatively to leave, cause to abound, preserve:—excel, leave (a remnant), left behind, too much, make plenteous, preserve, (be, let) remain(-der, -ing, -nant), reserve, residue, rest.
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to keep the feast of tabernacles
Israel is going to have to force the heathens to observe the laws, showing that the heathens will not receive the new covenant: the new covenant says that Israel will follow the law by default (Hebrews 8:6-12)
Strongs concordance