Luke 2:8φυλάσσοντες
And there were shepherds residing in the fields nearby, keeping watch over their flocks by night.
John 12:25φυλάξει
Whoever loves his life will lose it, but whoever hates his life in this world will keep it for eternal life.
Acts 12:4φυλάσσειν
He arrested him and put him in prison, handing him over to be guarded by four squads of four soldiers each. Herod intended to bring him out to the people after the Passover.
1 Timothy 5:21φυλάξῃς
I solemnly charge you before God and Christ Jesus and the elect angels to maintain these principles without bias, and to do nothing out of partiality.
2 Timothy 1:12φυλάξαι
For this reason, even though I suffer as I do, I am not ashamed; for I know whom I have believed, and I am convinced that He is able to guard what I have entrusted to Him for that day.
2 Peter 2:5ἐφύλαξεν
if He did not spare the ancient world when He brought the flood on its ungodly people, but preserved Noah, a preacher of righteousness, among the eight;

Abbott-Smith

φυλάσσω
[in LXX chiefly and very frequently for שָׁמַר, also for נָצַר, etc. ;]
to guard, watch;

(a) to guard or watch: with cogn. accusative, φυλακάς, Luk.2:8; with accusative of person(s), Act.12:4 28:16; pass., Luk.8:29, Act.23:35; with accusative of thing(s), Act.22:20;

(b) to guard or protect: with accusative, Luk.11:21, Jhn.12:25 17:12, 2Th.3:3, 1Ti.6:20, 2Ti.1:12 1:14, 2Pe.2:5; ἑαυτὸν ἀπό, 1Jn.5:21 (Westc., in l); metaphorically of law, precept, etc., to keep, preserve, observe: Mat.19:20, Luk.11:28 18:21, Jhn.12:47, Act.7:53 16:4 21:24, Rom.2:26, Gal.6:13, 1Ti.5:21. Mid., to be on one's guard (against), keep oneself from, beware of: with accusative, Act.21:25, 2Ti.4:15; before ἀπό., Luk.12:15; ἵνα μή, 2Pe.3:17; as in LXX (Exo.12:17, Lev.18:4, al.), of laws, etc., to keep, observe: ταῦτα πάντα, Mrk.10:20 (cf. δια-φυάσσω).†
SYN.: τηρέω, q.v
(AS)

Sources: Abbott-Smith’s Manual Greek Lexicon of the New Testament (1922, public domain) and glosses from STEPBible TBESG (CC BY 4.0); STEPBible TAGNT (Greek New Testament, CC BY 4.0); the Berean Standard Bible (public domain). Reformatted by Word Study, wording unchanged. All sources and licenses.