Matthew 1:2δὲ
Abraham was the father of Isaac, Isaac the father of Jacob, and Jacob the father of Judah and his brothers.
Mark 1:8δὲ
I baptize you with water, but He will baptize you with the Holy Spirit.”
Luke 1:6δὲ
Both of them were righteous in the sight of God, walking blamelessly in all the commandments and decrees of the Lord.
John 1:12δὲ
But to all who did receive Him, to those who believed in His name, He gave the right to become children of God—
Acts 1:5δὲ
For John baptized with water, but in a few days you will be baptized with the Holy Spirit.”
1 Corinthians 1:10δὲ
I appeal to you, brothers, in the name of our Lord Jesus Christ, that all of you agree together, so that there may be no divisions among you and that you may be united in mind and conviction.

Abbott-Smith

δέ (before vowels δ᾽; on the general neglect of the elision in NT, see WH, App., 146; Tdf., Pr., 96),
post-positive conjunctive particle;

1. copulative, but, in the next place, and, now (Abbott, JG, 104): Mat.1:2ff., 2Co.6:15, 16, 2Pe.1:5-7; in repetition for emphasis, Rom.3:21, 22, 9:30, 1Co.2:6, Gal.2:2, Php.2:8; in transition to something new, Mat.1:18, 2:19, Luk.13:1, Jhn.7:14, Act.6:1, Rom.8:28, 1Co.7:1 8:1, al.; in explanatory parenthesis or addition, Jhn.3:19, Rom.5:8, 1Co.1:12, Eph.2:4, 5:32, al.; ὡς δέ, Jhn.2:9; καὶ . . . δέ, but also, Mat.10:18, Luk.1:76, Jhn.6:51, Rom.11:23, al.; καὶ ἐὰν δέ, yea even if, Jhn.8:16.

2. Adversative, but, on the other hand, prop., answering to a foregoing μέν (which see), and distinguishing a word or clause from one preceding (in NT most frequently without μέν; Bl., §77, 12): ἐὰν δέ, Mat.6:14, 23, al.; ἐγὼ (σὺ, etc.) δέ, Mat.5:22, 6:6, Mrk.8:29, al.; ὁ δέ, αὐτὸς δέ, Mrk.1:45, Luk.4:40, al.; after a negation, Mat.6:19, 20, Rom.3:4, 1Th.5:21, al.
(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.