Genesis 20:12

וְגַם־אָמְנָ֗ה אֲחֹתִ֤י בַת־אָבִי֙ הִ֔וא אַ֖ךְ לֹ֣א בַת־אִמִּ֑י וַתְּהִי־לִ֖י לְאִשָּֽׁה׃

καὶ γὰρ ἀληθῶς ἀδελφή μού ἐστιν ἐκ πατρός, ἀλλ’ οὐκ ἐκ μητρός· ἐγενήθη δέ μοι εἰς γυναῖκα.

Greek text from Swete's edition, CC BY-SA 4.0

Y á la verdad también es mi hermana, hija de mi padre, mas no hija de mi madre, y toméla por mujer.

Besides, she really is my sister, the daughter of my father— though not the daughter of my mother— and she became my wife.