δια-στέλλω
[in LXX for בּדל hi. (De 10:8, al.), זהר hi. (Ez 3:18, 19, al.), and 19 other words]
1. to divide, distinguish, define.
2. to command, charge expressly: pass., τὸ διαστελλόμενον, He 12:20. Mid., in late Gk. with same sense (so Ez, l.c.; et al. in LXX; MM, s.v.); a. dat. pers., Mk 8:15, Ac 15:24; seq. ἵνα, Mt 16:20, Mk 5:437:369:9.†