Psalm 4:1

Answer Me when I call, O God of my righteousness! You have freed me when I was hemmed in and relieved me when I was in distress; be gracious to me and hear (and respond to) my prayer. 

Prayer has power. We cannot always see what is going on in the spiritual world around us, but Jesus can. When we pray according to the biblical word and using our authority, Jesus can hear and answer our prayers. The key is not to remain silent but to use our authority and call on the name of Jesus.