Abbott-Smith Manual Greek Lexicon
τήρησις (G5084)
3 ** τήρησις , -εως, ἡ ( τηρέω ), [in LXX: Wi 6:18 , ( Si 35 (32):23 ), I Mac 5:18 , II Mac 3:40 , III Mac 5:44 * ;] a watching , hence, imprisonment, ward (v. Deiss., BS , 267): Ac 4:3 5:18 . a keeping : τ. ἐντολῶν (cf. Sir, Wi, ll. c. , and v. Westc. on I Jo 2:3 .), I Co 7:19 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain