SEV Biblia, Chapter 20:12
Y a la verdad también es mi hermana, hija de mi padre, mas no hija de mi madre, y la tomé por mujer.
Clarke's Bible Commentary - Genesis 20:12
Verse 12. She is my sister] I have not told a lie; I have suppressed only a part of the truth. In this place it may be proper to ask, What is a lie? It is any action done or word spoken, whether true or false in itself, which the doer or speaker wishes the observer or hearer to take in a contrary sense to that which he knows to be true. It is, in a word, any action done or speech delivered with the intention to deceive, though both may be absolutely true and right in themselves. See note on ""chap. xii. 13. The daughter of my father, but not-of my mother] Ebn Batrick, in his annals, among other ancient traditions has preserved the following: ""Terah first married Yona, by whom he had Abraham; afterwards he married Tehevita, by whom he had Sarah."" Thus she was the sister of Abraham, being the daughter of the same father by a different mother.
Matthew Henry Commentary
Verses 9-13 - See here much to blame, even in the father of the faithful. Mark his distrust of God, his undue care about life, his intent to deceive. He also threw temptation in the way of others, caused affliction to them exposed himself and Sarah to just rebukes, and yet attempted an excuse These things are written for our warning, not for us to imitate. Eve Abraham hath not whereof to glory. He cannot be justified by his works but must be indebted for justification, to that righteousness which is upon all and unto all them that believe. We must not condemn all a hypocrites who fall into sin, if they do not continue in it. But le the unhumbled and impenitent take heed that they do not sin on thinking that grace may abound. Abimelech, being warned of God, take the warning; and being truly afraid of sin and its consequences, he rose early to pursue the directions given him.
Original Hebrew
וגם 1571 אמנה 546 אחתי 269 בת 1323 אבי 1 הוא 1931 אך 389 לא 3808 בת 1323 אמי 517 ותהי 1961 לי לאשׁה׃ 802