Dreaming of crying means that you suddenly get angry with the unknown and hurt a friend.
Dreaming of hearing the voice of God means that you will further enhance your noble moral sentiment and selfless belief in life, thus gaining the admiration and favor of other noble people.
Dreaming of hearing complaints or warnings indicates that you or someone close to you will experience an unfortunate thing.
Dreaming of being able to distinguish sounds usually indicates the occurrence of accidents or diseases, and may also mean suffering losses or even greater disasters.
If you're sure you can tell what it is, it's a bad omen. On the contrary, there is nothing wrong with it.