@keepitcoming – I think when he’s here everyone will know, don’t think there will be a doubt in anyone’s mind. And there are so many midrashim that will freak you out. Try reading the end of Sefer Yeshezkel where it talks about milchemes gog umagog.
Regarding packing clothing, I always said that I’ll have to wear my school uniform to greet Mashiach as it was the most (only?) modest clothing I had. Now that I’m out of uniform I think I have something big to work on before he comes…Ouch.