وَوَهَبْنَا لَهُۥٓ إِسْحَـٰقَ وَيَعْقُوبَ وَجَعَلْنَا فِى ذُرِّيَّتِهِ ٱلنُّبُوَّةَ وَٱلْكِتَـٰبَ وَءَاتَيْنَـٰهُ أَجْرَهُۥ فِى ٱلدُّنْيَا ۖ وَإِنَّهُۥ فِى ٱلْـَٔاخِرَةِ لَمِنَ ٱلصَّـٰلِحِينَ Qur’an Al-Ankabut (29:27)Wawahabna lahu ishaqa wayaAAqooba wajaAAalna fee thurriyyatihi alnnubuwwata waalkitaba waataynahu ajrahu fee alddunya wainnahu fee alakhirati lamina alssaliheena
I.e., in addition to Ishmael (Isma'il), who had been born some years earlier (cf. 21:72 ).
Among other things, by making him "a leader of men" ( 2:124 ).
Through honourable mention, righteous family, etc.
Isaac was Abraham's son and Jacob his grandson, and among his progeny was included Isma'il the eldest son of Abraham. Each of these became a fountain-head of Prophecy and Revelation, Isaac and Jacob through Moses, and Isma'il through the holy Prophet Muhammad. Jacob got the name of "Israel" at Bethel: Gen. 32:28; 35:10, and his progeny got the title of "The Children of Israel".
Cf xxix. 9, and iv. 69, n. 586.