Matthew 8:9δούλῳ
For I myself am a man under authority, with soldiers under me. I tell one to go, and he goes, and another to come, and he comes. I tell my servant to do something, and he does it.”
Mark 12:2δοῦλον
At harvest time, he sent a servant to the tenants to collect his share of the fruit of the vineyard.
Luke 2:29δοῦλόν
“Sovereign Lord, as You have promised, You now dismiss Your servant in peace.
John 4:51δοῦλοι
And while he was still on the way, his servants met him with the news that his boy was alive.
Romans 1:1δοῦλος
Paul, a servant of Christ Jesus, called to be an apostle, and set apart for the gospel of God—
Revelation 1:1δούλῳ
This is the revelation of Jesus Christ, which God gave Him to show His servants what must soon come to pass. He made it known by sending His angel to His servant John,

Abbott-Smith

δοῦλος, -η, -ον,
[in LXX, ὁ δ. nearly always for עֶבֶד; ὁ δ. chiefly for שִׁפְחָה ,אָמָה ;]

1. in bondage to, subject to: Rom.6:19.

2. As subst., ὁ, ἡ δ., a slave;

(a) fem., ἡ δ., a female slave, bondmaid (Cremer, 702; DB, iii, 215): Luk.1:38, 48 Act.2:18" (LXX) ;

(b) masc., ὁ δ., a slave, bond-man: Mat.8:9 18:23, al.; opposite to ἐλεύθερος, 1Co.7:22 12:13, Gal.3:28, Eph.6:8, Col.3:11, Rev.6:15 13:16 19:18; opposite to κύριος, δεσπότης, οἰκοδεσπότης, Mat.10:24 13:27, 28 Luk.12:46, Jhn.15:15, Eph.6:5, Col.3:22 4:1, al.; metaphorically, δ. Χριστοῦ, τοῦ Χρ., Ἰησοῦ Χρ., Rom.1:1, 1Co.7:22, Gal.1:10, Eph.6:6, Php.1:1, Col.4:12, Jas.1:1, 2Pe.1:1, Ju 1; δ. τ. θεοῦ, τ. κυρίου, Act.16:17, 2Ti.2:24, Tit.1:1, 1Pe.2:16, Rev.7:3 15:3; δ. πονηρός, ἀχρεῖος, κακός, Mat.18:32 24:48 25:26, 30, Luk.17:10 19:22; δ. ἁμαρτίας, Jhn.8:34, Rom.6:17, 20; τ. φθορᾶς, 2Pe.2:19.
SYN.: διάκονος (q.V.), θεράπων, ὐπηρέτης (see DB, iii, 377; iv, 461, 469; DCG, i, 221; ii, 613; Cremer, 215, 702).
(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.