I tell you this:
Is God obliged to confine His favor of making any prophet out of all mankind?
In other words, the kingdom and possession belong to God and all people are His created servants; then there were many prophets before Abraham; but because Abraham was loyal to God and he prayed Him to make out of his seed the religious leaders of mankind, then God gave him that promise, with exception: His promise will not include the wrong-doers among his seed.
So a large number of prophets proceded from his seeds, but not all the prophets are essentially out of Abraham's seed. In fact God sent His apostles to all nations and to all peoples, even to remote and isolated Islands; and not all these apostles were Abrahams's descendents. And evenso there was a large number of prophets and apostles out of his seed.
In like manner, later on the prophet-hood and the monarchy were to be out of certain tribes of Israel; but this was not an obligation.
E.g. their first king Saul was not of the descence of the monarchy tribe; but because he was giant in body and God gave him knowledge and the kingdom inspite of them.
Moreover, another one coming from the branch of Jessie was to rule; then David gathered the prophet-hood and the monarchy in one person.
Therefore, the favor is by the hand of God; none can object to Him; and He will not choose His adversaries to give them guidance and prophet-hood, even after they killed His prophets and worshipped the idols, and till now (see in this forum and other sites; it is they that spread and defend the Evolution theory and the atheism.)
[The interpretation is according to the late interpreter of the Quran and the Bible: the inspired Mohammed-Ali Hassan Al-Hilly - may God's mercy and peace be on his soul]
This is in the Quran 57: 29
لِئَلَّا يَعْلَمَ أَهْلُ الْكِتَابِ أَلَّا يَقْدِرُونَ عَلَى شَيْءٍ مِّن فَضْلِ اللَّهِ وَأَنَّ الْفَضْلَ بِيَدِ اللَّهِ يُؤْتِيهِ مَن يَشَاء وَاللَّهُ ذُو الْفَضْلِ الْعَظِيمِ
The explanation:
Then God addressed the Muslims, with this aya:
([We have shifted the revelation from Jews to you: the Arab; because of their association, unbelief and stubbornness];
so that [Jews] the people of the Bible [lit. Scripture] may know not from now on [anything of the revelation],
[and they should know] that they have no control over anything of God's bounty [to prevent the revelation from reaching the Arab],
and that the bounty [of sending the revelation down] is [entirely] by the hand of God; He gives it to whomsoever [of His servants] He will; and God is of abounding bounty [to His prophets and messengers.])