Hey.
Yeah, like brother alcurad stated.
There are some words in the Qur'an which no-one knows their meaning except Allah, for example Alif-Laam-Raa, Qaaf, Haa-Meem etc. Only Allah knows their meaning and no-one else.
Verses similar to these are the
Mutashaabihat verses, and they need clarification. Many verses like this are not too clear and require explanation, and these are the types of verses many of the
heterodox sects have tried to use throughout our Islamic history to make people doubt the true guidance of Allah, the Messenger of God and the way of his companions.
Then their are other types of verses [the
Muhkamat] which require the people of knowledge (the scholars); for example rulings related to inheritance, the ruling of whether one is permitted to pray while in a state of intoxication etc. These verses are clear in meaning, but require people of knowledge to find conclusions from the verses and ahadith which are given. It requires Fiqh [understanding], this is why we have scholars of Fiqh, some famous ones include Abu Hanifah, Malik ibn Anas, Ash-Shafi'ie, Ahmad ibn Hanbal, Al-Awza'iee etc.
The people who have knowledge say that all of the Qur'an is from our Lord, even if we do not understand certain parts of it clearly due to our limited knowledge on the issue. We believe in all of it, the whole of it is from our Lord.
For more info;
http://tafsir.com/default.asp?sid=3&tid=7700
And Allah knows best.