Lexical Definition

‎στηρίζω‎ stērízō (stay-rid'-zo) to establish ^G:V
from a presumed derivative of ‎ἵστημι‎ (like ‎στερεός‎)

fix, (e-)stablish, stedfastly set, strengthen.

• to set fast, i.e. (literally) to turn resolutely in a certain direction, or (figuratively) to confirm

Abbott-Smith

στηρίζω [in LXX for סמך, שׂוּם (שׂים), etc. ;]
to fix, set fast, make fast: Lk 16:26; τ. πρόσωτον (Ez 6:2 13:17, al.; v. Dalman, Words, 30 f.), Lk 9:51. Metaph., to confirm, establish: c., acc., Lk 22:32, Ac 18:23, Ro 1:11 16:25, I Th 3:2, 13, II Th 3:3, Ja 5:8, I Pe 5:10, Re 3:2; id. seq. ἐν, II Th 2:17, II Pe 1:12.†

Abbott-Smith References

Liddell-Scott-Jones

στηρίζω,

[Refs 5th c.BC+]: future -ίξω[NT+5th c.BC+], -ίσω [LXX]: aorist ἐστήριξα [Refs 8th c.BC+], Epic dialect στήριξα [Refs 8th c.BC+]; infinitive στηρίξαι [Refs 8th c.BC+]; participle στηρίξας [LXX+5th c.BC+]:—middle, aorist ἐστηριξάμην [Refs 8th c.BC+] later -ισάμην [LXX+1st c.AD+]: future στηρίξομαι [Refs 2nd c.AD+]:—passive, future στηριχθήσομαι [Refs 2nd c.AD+]: aorist ἐστηρίχθην [Refs 7th c.BC+]: perfect ἐστήριγμαι [Refs 8th c.BC+]; infinitive ἐστηρίσθαι [LXX]: pluperfect ἐστήρικτο [Refs 8th c.BC+]:—make fast, prop, fix, [ἴριδας] ἐν νέφεϊ στήριξε sets rainbows in the cloud, [Refs 8th c.BC+]; στηρίζειν αὐτὸ αὑτό φησι τὸ ἄπειρον (i.e. Anaxagoras) [Refs 4th c.BC+]; so probably, [λίθον] Ζεὺς στήριξε κατὰ χθονός he set the stone fast in the ground, [Refs 8th c.BC+]

__2 support, σίτῳ τινά [LXX]; feed up a patient, [Refs 2nd c.AD+]: metaphorically, confirm, establish, τὴν ἀρχήν [NT+2nd c.AD+]; corroborate, [Refs 2nd c.AD+]
__3 middle, ground, establish for oneself, κόσμον ἑαῖς στηρίξατο βουλαῖς [Refs 5th c.AD+]; πόντος στηρίξατο κῦμα νήνεμον settled its wave into a calm, [Refs 1st c.AD+]
__B passive and middle, to be firmly set or fixed, stand fast, οὐδὲ πόδεσσιν εἶχε στηρίξασθαι he could not get a firm footing, [Refs 8th c.BC+]; [δώματα] κίοσιν ἀργυρέοισι πρὸς οὐρανὸν ἐστήρικται the house is lifted up to heaven on pillars, [Refs 7th c.BC+]; ὅσοι ἐστηρίξαντο τῇ πτέρνῃ ἰσχυρῶς πηδήσαντες light heavily on it, [Refs 5th c.BC+]; ὕβον, ἐφ᾽ οὗ ἐστήρικται τὸ ἄλλο σῶμα is steadied, [Refs 4th c.BC+]; ἐστηριγμένα [ἔχειν] τὰ σπλάγχνα supported, opposed to κρεμάμενα, [Refs 2nd c.AD+]; ἄμπελος κάμακι σ. [Refs 1st c.AD+]; of the fixed stars, [Refs 4th c.BC+]; opposed to ἀκοντίζεσθαι, [Refs 4th c.BC+]; χάσμα μέγα ἐστ. [NT]; of places, merely to be situated, [Refs 2nd c.AD+]
__B.2 metaphorically, κακὸν κακῷ ἐστήρικτο evil was set upon evil, [Refs 8th c.BC+]; τί τοι χόλος ἐστήρικτα; [Refs 3rd c.BC+]; δέκατος μεὶς οὐρανῷ ἐστήρικτο the tenth month was set in heaven, [Refs]; of a person, ὅπου.. στηρίζει ποτέ wheresoever thou art tarrying, art settled, [Refs 5th c.BC+]; ὅροι ἐστηριγμένοι fixed principles, [Refs 2nd c.BC+] “*Geometry texts” 3.25; ἀνάγκη στηριχθῆναι τὸ ν ¯ must be firmly pronounced, [Refs 1st c.BC+]
__B.3 of diseases,[Refs 2nd c.AD+]
__B.II active intransitive in same sense, οὐδέ πῃ εἶχον.. στηρίξαι ποσὶν ἔμπεδον.. [Refs 8th c.BC+]; κῦμ᾽ οὐρανῷ στηρίζον a wave rising up to heaven, [Refs 5th c.BC+]; πρὸς οὐρανὸν καὶ γαῖαν ἐστήριξε φῶς[Refs 1st c.AD+]
__B.II.2 of diseases, fix, settle, determine to a particular part, ὁπότε εἰς τὴν καρδίαν στηρίξειεν (i.e. ἡ νόσος) [Refs 5th c.BC+]
__B.II.3 of planetary phases, pause, stand still, [Refs 1st c.BC+]
__B.II.4 metaphorically, ἐπὶ δόγματος σ. hold fast to an opinion, [Refs 3rd c.AD+]

_{LSJ Scripture Refs: 1Pet.5.10 ☩ LXX.Jer.17.5 ☩ LXX.Jer.24.6 ☩ LXX.Gen.27.37 ☩ LXX.Isa.59.16 ☩ LXX.1Kgs.26.19 ☩ LXX.Gen.27.37 ☩ Luke.22.32 ☩ 2Thess.2.17 ☩ 1Pet.5.10 ☩ Luke.16.26}