Ecclesiastes 5:3 says, For a dream cometh through the multitude of business; and a fool’s voice is known by multitude of words.  Solomon was still speaking about prayer.  When we are busy with the everyday business of life, we often have strange and confusing dreams.  Solomon said the fool was the same way, thinking that a multitude or words would make him sound wise.  There is a saying that the less we know about a subject, the louder we argue for our point of view, and the longer we speak about it.  We can be sure that when it comes to prayer, we know less than God does, so we do not need to try and convince Him of our point.  We need to come to God with a humble and contrite heart.  Verse four says, When thou vowest a vow unto God, defer not to pay it; for he hath no pleasure in fools: pay that which thou hast vowed.  Solomon was warning against making empty vows to God.  We often attempt to bargain with God by making promises to Him.  We tell God that if He will answer our prayer, then we will live totally for Him, but if the prayer is answered, then we begin to ignore our promise.  We need to quickly pay what we vow to God.  Otherwise, we are acting as a fool.  Verse five says, Better is it that thou shouldest not vow, than that thou shouldest vow and not pay.  If we are not going to follow through with our vows to God, we are better off not making them.  Verse six continues, Suffer not thy mouth to cause thy flesh to sin; neither say thou before the angel, that it was an error: wherefore should God be angry at thy voice, and destroy the work of thine hands?  This is a warning against making false promises to God.  We may even mean them when we make them, but then decide we promised too much.  Matthew Henry says the angel could be our guardian angel or a reference to Christ as the Angel of the covenant.  I personally see it as a reference to angels as messengers of God.  Our vows are to God, not His messengers, and we should never attempt to go back on them.  God will be right to be angry at such promises.  Verse seven concludes, For in the multitude of dreams and many words there are also divers vanities: but fear thou God.  We may claim God spoke to us in a dream and make false promises based on that dream, but Solomon warns that our first priority is to fear, to have an overpowering awe of God, in all we do.