The Messenger (sallal-laahu-alayhi-wasallam) is from humankind!
Shaikh Rabee Bin Haadi (may Allaah preserve him) said:
Allaah (The Most High) said:
لَقَدْ مَنَّ اللَّهُ عَلَى الْمُؤْمِنِينَ إِذْ بَعَثَ فِيهِمْ رَسُولًا مِّنْ أَنفُسِهِمْ يَتْلُو عَلَيْهِمْ آيَاتِهِ وَيُزَكِّيهِمْ وَيُعَلِّمُهُمُ الْكِتَابَ وَالْحِكْمَةَ وَإِن كَانُوا مِن قَبْلُ لَفِي ضَلَالٍ مُّبِينٍ
Indeed Allah conferred a great favour on the believers when He sent among them a Messenger (Muhammad) from among themselves, reciting unto them His Verses (the Qur’an), and purifying them (from sins by their following him), and instructing them (in) the Book (the Qur’an) and Al-Hikmah [the wisdom and the Sunnah of the Prophet (i.e. his legal ways, statements, acts of worship, etc.)], while before that they had been in manifest error. [3:164]
The Ayah is a proof that indeed the Messenger (sallal-laahu-alayhi-wasallam) is from the believers.
 The Mufassiroon said: The intended meaning of مِّنْ أَنفُسِهِمْ – Among them’ is that he is indeed from the Arabs.
 Other (Mufassiroon) said: The intended meaning of (this ayah) is that he [i.e. the Messenger (sallal-laahu-alahi-wasallam)] is a human being.
In the first explanation of the above Ayah, the great favour conferred on them is that they understand the Messenger and he understands them, and they do not require a translator. In the second explanation of the above Ayah, the great favour conferred on them is that they socialize with him just as humans socialize with one another.
[Source: Adwaa Islaamiyyah Alaa Ba’dil Afkaar Al-Khaati’ah. Page:56-57]