Luke 16:11ἀληθινὸν
So if you have not been faithful with worldly wealth, who will entrust you with true riches?
John 1:9ἀληθινὸν
The true Light, who gives light to everyone, was coming into the world.
1 Thessalonians 1:9ἀληθινῷ
For they themselves report what kind of welcome you gave us, and how you turned to God from idols to serve the living and true God
Hebrews 8:2ἀληθινῆς
and who ministers in the sanctuary and true tabernacle set up by the Lord, not by man.
1 John 2:8ἀληθινὸν
Then again, I am also writing to you a new commandment, which is true in Him and also in you. For the darkness is fading and the true light is already shining.
Revelation 3:14ἀληθινός
To the angel of the church in Laodicea write: These are the words of the Amen, the faithful and true Witness, the Originator of God’s creation.

Abbott-Smith

ἀληθινός, -ή, -όν
(ἀληθής), [in LXX for אֶמֶת ;]
true, in the sense of real, ideal, genuine: Luk.16:11 Jhn.1:9 4:23, 37 6:32 7:28 8:16 15:1 17:3 19:35, 1Th.1:9, Heb.8:2 9:24 10:22, 1Jn.2:8 Jn 5:20, Rev.3:7, 14 6:10 15:3 16:7 19:2; = ἀληθής, Rev.19:9 21:5 22:6 (MM, VGT, see word).†
SYN.: ἀληθής, q.v
(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.