It may sound funny, but I’m sure that as kids you may have atleast once questioned your elders that ‘Does God listen to our prayers, although we cannot see Him?’. And the answer has probably been ‘Yes’.
I guess so because the reason has been quite a valid one. In hindu culture the flame of lamp known as ‘Diya’, acts like a witness to whatever we pray; It is the sole visible observer of are thoughts and emotions. The Flame relates to the God of flame the ‘Agni Devta’ who acts as a messenger on Earth of our deeds to God Himself.
Thus one should trust one’s prayer and believe that god has send his messengers to this Earth who carry our feelings to him. He listens to us, cares for us and loves usp; hence will not let us down in time of need if we pray to Him selflessly.