The Holy Scripture
Sirach
Chapter XLVII
And after him rose up Nathan to prophesy in the time of David.
καὶ μετὰ τοῦτον ἀνέστη Ναθαν προφητεύειν ἐν ἡμέραις Δαυιδ
As is the fat taken away from the peace offering, so was David chosen out of the children of Israel.
ὥσπερ στέαρ ἀφωρισμένον ἀπὸ σωτηρίου οὕτως Δαυιδ ἀπὸ τῶν υἱῶν Ισραηλ
He played with lions as with kids, and with bears as with lambs.