Matthew 1:18ἢ
This is how the birth of Jesus Christ came about: His mother Mary was pledged in marriage to Joseph, but before they came together, she was found to be with child through the Holy Spirit.
Mark 2:9ἢ
“Which is easier: to say to a paralytic, ‘Your sins are forgiven,’ or to say, ‘Get up, pick up your mat, and walk’?
Luke 2:24ἢ
and to offer the sacrifice specified in the Law of the Lord: “A pair of turtledoves or two young pigeons.”
Acts 1:7ἢ
Jesus replied, “It is not for you to know times or seasons that the Father has fixed by His own authority.
Romans 1:21ἢ
For although they knew God, they neither glorified Him as God nor gave thanks to Him, but they became futile in their thinking and darkened in their foolish hearts.
1 Corinthians 1:13ἢ
Is Christ divided? Was Paul crucified for you? Were you baptized into the name of Paul?

Abbott-Smith

ἤ,
disjunctive and comparative particle (Bl., §36, 12; 77, 11);

1. disjunctive, or;

(a) between single words: Mat.5:17 Mrk.6:56, Luk.2:24, Jhn.6:19, Rom.1:21, al.;

(b) before a sentence expressing a variation, denial or refutation of a previous statement, frequently in interrog. form: Mat.7:4, 9 Mrk.12:14, Luk.13:4, Rom.3:29 6:3 9:21, 1Co.6:9, 16 9:6, 2Co.11:7; ἤ . . . ἤ, either . . . or, Mat.6:24, Luk.16:13, 1Co.14:6;

(with) in a disjunctive question (as Lat. an after utrum): Mat.9:5, Mrk.2:9, Luk.7:19, al.; after πότερον, Jhn.7:17; μή, 1Co.9:8; μήτι, 2Co.1:17; ἤ . . . ἤ . . . ἤ, Mrk.13:35.

2. Comparative, than: after comparatives, Mat.10:15, Luk.9:13, Jhn.3:19, Rom.13:11, al.; after ἕτερον, Act.17:21; θέλω (Khüner 3, iv, 303), 1Co.14:19; πρὶν ἤ, before, before accusative and inf., Mat.1:18 Mrk.14:30; after a positive adj. (Gen.49:12; cf. Robertson, Gr., 661), Mat.18:8, 9 Mrk.9:43, 45 47.

3. with other particles: ἀλλ᾽ ἤ, see: ἀλλά; ἤ γάρ, see: γάρ; ἢ καί, or even, or also, Mat.7:10, Luk.11:11, 12 Rom.2:15 4:9, al; ἤτοι . . . ἤ, Rom.6:16 (cf. Wis.11:19).
(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.