The word "Islam" itself means "Submission to Allah."
"Verily! Allah does not forgive that a partner should be ascribed unto Him. He forgives (all) save that to whom He will. Whoso ascribes partners to Allah, he has indeed invented a tremendous sin." The noble Qur'an, Al-Nissa(4):48.
"He is the One that accepts repentance from His Servants and forgives sins: and He knows all that you do." The noble Qur'an, Al-Shurah(42):25.
"The likeness of those who spend their wealth in Allah's way is as the likeness of a grain which grows seven ears, in every ear a hundred grains. Allah gives manifold increase to whom He will. Allah is All Embracing, All Knowing." The noble Qur'an, al-Bakarah(2):261
Abu Hurairah narrated : I heard Allah's messenger (pbuh) saying:
"Allah has divided His Mercy into one hundred parts, and He kept ninety nine parts with Him and sent down one part on the earth, and because of that one single part, His creatures are merciful to each other, so that even the mare lifts up it's hoof away from it's baby animal, lest it should trample it." Narrated in Sahih al-Bukhari.