There is no need to take it as a warning in a spiritualistic form, and claim that a spirit, a ghost or an angel came to tell you the future. It is your own mind which disguises itself as a spirit, a ghost or an angel, in whatever form you wish it to come to you, or in whatever form you are accustomed to. It will never come in a form strange to you, such as you have never known; it will only come in a form to which you are accustomed. For instance, if you were to see a dog with wings, it would still be the form of a dog with which you are familiar; only the mixture or combination of forms is curious. Although wings are attached to the dog, the form is not actually new; you are seeing something which you recognize.