God truly hears us when we cry out to him. How do we know that to be true? Well here is the answer to that question!!!
Deuteronomy 26:7-8 New International Version (NIV)
7 Then we cried out to the Lord, the God of our ancestors, and the Lord heard our voice and saw our misery, toil and oppression. 8 So the Lord brought us out of Egypt with a mighty hand and an outstretched arm, with great terror and with signs and wonders.