Even a few words from a humble, pure soul, though illiterate, will appeal to the Lord more than the eloquent flowing words of an orator or a learned man. The child does not know grammar and pronunciation. He knows what you wish to say. Even if you make mistakes in your prayer to Him, even if there are mistakes in the Mantras you recite, if you are sincere, if the prayer comes from your heart, He listens to it, because He understands the language of your heart. Prayer should spring from the heart and should not be mere lip-homage.
Empty prayer is like sounding brass or tinkling cymbal.
Prayer that comes from a sincere, pure heart is at once heard by the Lord. The prayer of a cunning, crooked, wicked man is never heard. God ever responds to the appeal of His sincere devotees. It is only the insincere man who says that God is deaf. He is ever watchful of the distress signals of His children.