Permission

Hom. often uses the optative with a concessive or permissive force: ἔπειτα δὲ καί τι πάθοιμι after that I may (lit. may I) suffer come what will Φ 274.

The imperative may be used in assumptions (hypothetical imperative), to make a concession, or to grant permission: ἐμοῦ γ᾽ ἕνεκ᾽ ἔστω let it be assumed as far as I am concerned D. 20.14, οὕτως ἐχέτω ὡς σὺ λέγεις assume it to be as you say P. S. 201c. So even as a protasis: δειξάτω, κᾱ̓γὼ στέρξω let him set it forth and I will be content D. 18.112.

Jussive Future.—The future may express a command, like the imperative; and, in the second person, may denote concession or permission. The negative is οὐ. The tone of the jussive future (which is post-Homeric) is generally familiar.

ὣς οὖν ποιήσετε you will do thus P. Pr. 338a, ἀναγνώσεται τὸν νόμον—ἀναγίγνωσκε the clerk will read the law—read D. 24.39, αὐτὸς γνώσει you will judge for yourself P. Phil. 12a, σπουδὴ ἔσται τῆς ὁδοῦ you will have to hurry on the march T. 7.77, ῡ̔μεῖς οὖν, ἐᾱ̀ν σωφρονῆτε, οὐ τούτου ἀλλ᾽ ῡ̔μῶν φείσεσθε now, if you are wise, you will spare, not him, but yourselves X. H. 2.3.34.