Hello, I am studying Islam and wonder if you might be able to help me find where in the Qur'an exactly Muhammad (p.b.u.h.) is described as God's final messenger. Thank You

We are pleased to refer you to the following Quranic verses for your reference: 3:144; 33:40; 47:2; 48:29.

Q 3:144
Muhammad is no more than a messenger. Many were messengers that passed away before him. If he died or were slain, will ye then turn back on your heels? If any did turn back on his heels, not the least harm will he do to Allah; but Allah (on the other hand) will swiftly reward those who (serve Him) with gratitude.

Q 33:40
Muhammad is not the father of any of your men, but he is the Messenger of Allah and the last of the Prophets; and Allah is cognizant of all things.

Q 47:2
And (as for) those who believe and do good, and believe in what has been revealed to Muhammad, and it is the very truth from their Lord, He will remove their evil from them and improve their condition.

Q 48:29
Muhammad is the messenger of Allah; and those who are with him are strong against Unbelievers, (but) compassionate amongst each other. Thou wilt see them bow and prostrate themselves (in prayer), seeking Grace from Allah and (His) Good Pleasure.