Also, one person can have the understanding of another dream. And when Gideon was come, behold, there was a man that told a dream unto his fellow, and said, Behold, I dreamed a dream, and, lo, a cake of barley bread tumbled into the host of Midian, and came unto a tent, and smote it that it fell, and overturned it, that the tent lay along. And when Saul enquired of the LORD, the LORD answered him not , neither by dreams , nor by Urim, nor by prophets. Which think to cause my people to forget my name by their dreams which they tell every man to his neighbour, as their fathers have forgotten my name for Baal. Just as there are false prophets, so there are false dreams.
False prophets can have false dreams, from their own hearts.
It is God Himself, Who gives the gift to have and understand real spiritual dreams. This gift is for Old and New Testament times. To explain cf. God calling a man cf. And I said, Here am I. To reveal the future of an individual cf.