Extended Strong's Greek Lexicon (Abbott-Smith based)
to gain
Usage: περι-ποιέω, -ῶ [in LXX for pi., hi., etc. ;] to make to remain over, preserve. Mid. __(a) to keep or save for oneself: τ. ψυχήν (cf. Xen., Cyr., iv, 4, 10; Arist., Pol., v, 11, 30), Luk.17:33; __(b) to get or gain for oneself, get possession of (Thuc., Xen., al.) : Act.20:28, 1Ti.3:13.† (AS)