Believing...... is so much important for Jesus said to those that believes in me such signs shall follow them.. to cast away demons,speaks in new tongues, lay hands on the sick ones and IF one did not believe in Jesus how can these be manifest in his life. Forgiving.. if one can not forgive his neighbour or those that sins against him how can he pray and heaven hear him this is a means of gadering iniquity in heart for your prayer to be effective you must apply these principles.