Flavius Josephus, Antiquitates Judaicae, Book 6 209:

ὡς δ ἧκεν ὁ Δαβίδης μεταπεμφθεὶς ὑπὸ τοῦ πατρὸς, παῖς ξανθὸς μὲν τὴν χρόαν γοργὸς δὲ τὰς ὄψεις καὶ καλὸς ἄλλως "οὗτός ἐστιν, εἰπὼν ἡσυχῇ πρὸς αὑτὸν Σαμουῆλος, ὁ βασιλεύειν ἀρέσας τῷ θεῷ" κατακλίνεται μὲν αὐτός, κατακλίνει δ ὑφ αὑτὸν τὸν νεανίσκον καὶ τὸν Ιἐσσαῖον μετὰ καὶ τῶν παίδων.??