Lexical Definition

‎τηρέω‎ tēréō (tay-reh'-o) to keep: observe G:V
from (a watch

hold fast, keep(- er), (pre-, re-)serve, watch.

Usage: 25 forms in 38 verses
Form Translated As     In Verse(s)
ἐτήρησασ you have kept Rev.3.10
ἐτήρησαν they kept John.15.20
ἐτήρησάσ you have kept Rev.3.8
τηρῶν is keeping Rev.2.26
keeping John.14.211John.2.41John.3.24Rev.22.7
τηρῶμεν we may keep 1John.5.3
we shall keep 1John.2.3
τηρῶ I keep John.8.55
τηρῇ may keep 1John.2.5
τηρῆσαί to keep 1Tim.6.14
τηροῦντεσ keeping Rev.1.3Rev.14.12
τηροῦμεν we keep 1John.3.22
τηρούντων are keeping Rev.12.17
keeping Rev.22.9
τηρεῖτε do observe Matt.23.3
τηρεῖν to keep Matt.23.3Acts.15.5
to observe Matt.28.20
τηρεῖ He does keep John.9.16
does keep John.14.24
τηρήσῃ may keep Jas.2.10
shall keep John.8.51John.8.52
τηρήσουσιν they will keep John.15.20
τηρήσητε you shall keep John.15.10
τηρήσετε you will keep John.14.15
τηρήσει he will keep John.14.23
τηρήσατε do keep Jude.1.21
τηρήσαντασ having kept Jude.1.6
τετήρηκαν they have kept John.17.6
τετήρηκα I have kept 2Tim.4.7
have kept John.15.10
τήρησον do keep Matt.19.17
τήρει do keep Rev.3.3

Abbott-Smith

τηρέω, -ῶ [in LXX for שָׁמַר, נָצַר, etc. ;]
1. to watch over, guard, keep, preserve: Mt 27:36, Ac 16:23, al.; ἑαυτόν, II Co 11:9, I Ti 5:22, Ja 1:27, Ju 21; seq. εἰς, Jo 12:7, Ac 25:21, I Pe 1:4, II Pe 2:4, 9 3:7, Ju 6; ἐν, Jo 17:11, 12, Ju 21; ἐκ, Jo 17:15, Re 3:10; τ. πίστιν, II Ti 4:7, Re 14:12; τ. ἑνότητα τ. πνεύματος, Eph 4:3.
2. to watch, give heed to, observe: τ. σάββατον, Jo 9:16; τ. ἐντολήν (-άς), Mt 19:17, Jo 14:15 15:10, I Ti 6:14, I Jo 2:3, 4 3:22, 24 5:3, Re 12:17 14:12; τ. λόγον (-ους), Jo 8:51, 52, 55 14:23, 24 15:20 17:6, I Jo 2:5, Re 3:8, 10 22:7, 9; τ. νόμον, Ac 15:5, Ja 2:10; τ. παράδοσιν, Mk 7:9; τ. ἔργα, Re 2:26; τ. γεγραμμένα, Re 1:3 (cf. δια-, παρα-, συν-τηρέω)
SYN.: φυλάσσω, implying custody and protection: τ. expresses the idea of watchful care and "may mark the result of which φ. is the means" (Thayer s.v.).

Abbott-Smith References

Book Refs
Matthew 19:17 · 27:36
Mark 7:9
John 8:51 · 8:52 · 8:55 · 9:16 · 12:7 · 14:15 · 14:23 · 14:24 · 15:10 · 15:20 · 17:6 · 17:11 · 17:12 · 17:15
Acts 15:5 · 16:23 · 25:21
2 Corinthians 11:9
Ephesians 4:3
1 Timothy 5:22 · 6:14
2 Timothy 4:7
James 1:27 · 2:10
1 Peter 1:4
2 Peter 2:4 · 2:9 · 3:7
1 John 2:3 · 2:4 · 2:5 · 3:22 · 3:24 · 5:3
Jude 1:6 · 1:21
Revelation 1:3 · 2:26 · 3:8 · 3:10 · 12:17 · 14:12 · 22:7 · 22:9

Liddell-Scott-Jones

τηρέω-έω

(τη- also in Doric dialect, [τηρέωέω)">Refs 7th c.BC+], perfect τετήρηκα [Refs 4th c.BC+]:—watch over, take care of, guard, δώματα [Refs 5th c.BC+]; rarely of persons, δαιμόνων.., αἵτινες τηρέωοῦμεν ὑμᾶς [Refs 5th c.BC+]; τ. τὴν ἀρχήν maintain it, [Refs 2nd c.BC+] —passive, τὸ ἔξωθεν [τεῖχος] τηρέωεῖτο was constantly guarded, [Refs 5th c.BC+]future middle τηρέωήσομαι in passive sense, [Refs]

__2 τ. ὅπως.. ἔσται take care that.. , [Refs 4th c.BC+]; τ. μὴ.. cavere ne.. , [Refs 5th c.BC+]: also in middle, τηρέωώμεσθ᾽, ὅπως μὴ.. αἰσθήσεται [τηρέωοῦ μὴ λάβῃς ὑπώπια [prev. work] 1386. ">Refs 5th c.BC+]
__3 τηρέωεῖν ἀπὸ τοῦ πυρός protect them from the fire, i.e. cook them slowly, Bilabel Ὀψαρτ.[Refs]
__II give heed to, watch narrowly, observe, τηρέω αὐτοὺς οὐδὲ δοκῶν ὁρᾶν κλέπτοντας [Refs 5th c.BC+]
__II.2 watch for a person or thing, with a participle, παραστείχοντα τηρέωήσας [Refs 5th c.BC+]; ἔνδον ὄντα τηρέωήσαντες αὐτόν having watched for his being within, [Refs 5th c.BC+]; τ. τὸν πορθμὸν κατιόντος τοῦ ἀνέμου watching for a crossing with the wind blowing down, [Refs]; τ. τινὰ ἀνιόντα watch for one's coming up, [τηρέωῆσαι 5th c.BC: Thucydides Historicus 1.65; τ. νύκτα χειμέριον [prev. author] 3.22, compare 4.27 ">Refs 5th c.BC+]; νύκτα καὶ ὕδωρ, [Refs 4th c.BC+]; τὴν θήραν τ. [Refs] —passive, καιρὸς τηρέωήθη was watched for, [Refs 5th c.BC+]
__II.3 absolutely, watch, keep watch, [Refs 5th c.BC+]: with infinitive, watch or look out, so as to.., ἐτήρουν ἀνέμῳ καταφέρεσθαι [Refs 5th c.BC+]
__II.4 observe, notice, [μετακόσμησιν σωμάτων] [Refs 2nd c.AD+]
__II.5 test by observation or trial, τετηρέωημένον βοήθημα an approved method of treatment, [Refs 2nd c.AD+]; as Empiric term, τετηρέωημένης ἐπ᾽ αὐτοῖς τῆς θεραπείας, οὐκ ἐνδεικτικῶς εὑρισκομένης [τηρέωῆσθαι φλεβοτομίαν [prev. author] 15.766. ">Refs 2nd c.AD+]
__III observe or keep an engagement, ὅρκους [NT+5th c.BC+]
__III.2 preserve, retain, τὰς αἰσθήσεις uncertain in [Refs 5th c.BC+]

LSJ Scripture Refs: 2Tim.4.7