Were you witnesses when death appeared before Ya`qub? Behold, he said to his sons: “What will you worship after me?” They said: “We shall worship your AIlah and the AIlah of your fathers, of Ibrahim, Ismail and Ishaq, the one (True) Allah: To Him we bow (in Islam).” (2:133)

Say you: “We believe in Allah, and the revelation given to us, and to Ibrahim, Ismail, Ishaq, Ya`qub, and the Tribes, and that given to Musa and `Isa, and that given to (all) Prophets from their Lord: We make no difference between one and another of them: And we bow to Allah (in Islam).” (2:136)

Or do you say that Ibrahim, Ismail Ishaq, Ya`qub and the Tribes were Jews or Christians? Say: Do you know better than Allah? Ah! Who is more unjust than those who conceal the testimony they have from Allah? But Allah is not unmindful of what you do! (2:140)

We have sent you revealation, as We sent it to Nuh and the Messengers after him: we sent inspiration to Ibrahim, Ismail, Ishaq, ‘Ya`qub and the Tribes, to `Isa, Ayyub, Yunus, Harun, and Sulayman, and to Dawad We gave the Zabur. (4:163)

And his wife was standing (there), and she laughed: But we gave her glad tidings of Ishaq, and after him, of `Ya`qub. (11:71)

“Thus will your Lord choose you and teach you the interpretation of stories (and events) and perfect His favour to you and to the posterity of Ya`qub even as He perfect it to your fathers Ibrahim and Ishaq aforetime! For Allah is full of knowledge and wisdom.” (12:6)

And We gave him the good news of Ishaq- a prophet,- one of the Righteous. (37:112)

We blessed him and Ishaq; but of their progeny are (some) that do right, and (some) that obviously do wrong, to their own souls. (37:113)