Matthew 4:18δύο
As Jesus was walking beside the Sea of Galilee, He saw two brothers, Simon called Peter and his brother Andrew. They were casting a net into the sea, for they were fishermen.
Mark 6:7δύο
Then Jesus called the Twelve to Him and began to send them out two by two, giving them authority over unclean spirits.
Luke 2:24δύο
and to offer the sacrifice specified in the Law of the Lord: “A pair of turtledoves or two young pigeons.”
John 1:35δύο
The next day John was there again with two of his disciples.
Acts 1:10δύο
They were looking intently into the sky as He was going, when suddenly two men dressed in white stood beside them.
Revelation 9:12δύο
The first woe has passed. Behold, two woes are still to follow.

Abbott-Smith

δύο, numeral, indecl. exc. in dative, δυσί, δυσίν (Attic δυοῖν),
two: Mat.19:6, Mrk.10:8, Jhn.2:6, al.; with pl. noun, Mat.9:27 10:10, al.; οἱ, τῶν, τοὺς δ., Mat.19:5 20:24, Mrk.10:8, Eph.2:15, al.; δ. ἐξ, Luk.24:13; distrib., ἀνὰ, κατὰ δ., two and two, two apiece: Luk.10:1 (WH, ἀνὰ δ. [δύο]), Jhn.2:6, 1Co.14:27; δύο δύο (= ἀνὰ δ., as LXX, Gen.6:19 for שְׁנַיִם שְׁנַיִם, but not merely "Hebraism," cf. μυρία μυρία, Æsch., Pers., 981, and for usage in π. and MGr., see M, Pr., 21, 97), Mrk.6:7; εἰς δ. (two and two, Xen., Cyr., 7, 5, 17), into two parts, Mat.27:51, Mrk.15:38.
(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.