Lexical Definition

‎στήκω‎ stḗkō (stay'-ko) to stand G:V
from the perfect tense of ‎ἵστημι‎

stand (fast).

Usage: 3 forms in 10 verses
Form Translated As     In Verse(s)
στήκοντεσ standing Mark.3.31
στήκετε are standing firm 1Thess.3.8
do stand firm 1Cor.16.13 • Gal.5.1 • Phil.4.1 • 2Thess.2.15
stand firmly LXX.Josh.10.19
you are standing firm Phil.1.27
you stand Mark.11.25
στήκει he stands Rom.14.4

Abbott-Smith

† στήκω late Pres., formed from perf., ἕστηκα (v. B1., § 17; WH, App., 169; Kennedy, Sources, 158; M, Pr., 238; MM, xxiii), [in LXX: Ex 14:13 A, Jg 16:26 B, III Ki 8:11 B * ;]
= ἵστημι, to stand: Mk 3:31 11:25, Jo 1:26, Re 12:4 (ἕστηκεν T). Metaph., to stand firm, stand fast: absol., Ga 5:1 (but v. Field, Notes, 189 f.), II Th 2:15; seq. ἐν, Jo 8:44 (ἕστηκεν, T, R, mg.), I Co 16:13, Phl 1:27 4:1; c. dat., Ro 14:4.†

Abbott-Smith References

Book Refs
Exodus 14:13
Judges 16:26
1 Kings 8:11
Mark 3:31 · 11:25
John 1:26 · 8:44
Romans 14:4
1 Corinthians 16:13
Galatians 5:1
Philippians 1:27 · 4:1
2 Thessalonians 2:15
Revelation 12:4

Liddell-Scott-Jones

στήκω,

late present formed from ἕστηκα (perfect of ἵστημι), stand, [LXX+NT]; participle, παρὼν καὶ στήγων (sic) [Refs 4th c.AD+]; so ἑστήκω, [Refs 3rd c.BC+].

LSJ Scripture Refs: Rom.14.4 ☩ 1Cor.16.13