Abbott-Smith Manual Greek Lexicon
προθύμως (G4290)
1 προθύμως , [in LXX: II Ch 29:34 ( לֵבָב יִשְׁרֵי ), To 7:8 , al.;] eagerly , readily , with a ready mind : I Pe 5:2 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain