Parallel
2 Corinthians 6:18
Patriarchal Greek New Testament (1904) · Berean Standard Bible
καὶ ἔσομαι ὑμῖν εἰς πατέρα, καὶ ὑμεῖς ἔσεσθέ μοι εἰς υἱοὺς καὶ θυγατέρας, λέγει Κύριος παντοκράτωρ.
And: “I will be a Father to you, and you will be My sons and daughters, says the Lord Almighty (note: See 2 Samuel 7:14.).”