Command
Overlapping with the imperative mood
and subjunctive mood, the future form can function to express a command or
prohibition. Compared to the imperative and subjunctive, the future form is
semantically more forceful, grammaticalizing expectation toward the process.
καὶ καλέσεις τὸ ὄνομα αὐτοῦ Ἰησοῦν.
(Matt. 1:21)
And you shall call his name Jesus [command].
γέγραπται ὅτι οὐκ ἐπ᾽ ἄρτῳ μόνῳ ζήσεται
ὁ ἄνθρωπος. (Luke 4:4)
it is written that a persona shall not live by bread alone
[prohibition]. (David L. Mathewson, Voice and Mood: A Linguistic Approach [Essentials
of Biblical Greek Grammar; Grand Rapids, Mich.: Baker Academic, 2021], 134)