There are alien beings protecting our planet... why do you think they got in contact with me?

Hi... I am so freaked out by this but yesterday I was out walking my dogs on the green (which was quite dark) when all of a sudden I heard an echo which was saying 'we come to create peace of mind... we will gladly tell you that we protect this planet with authority and we will be back... we have called to you because we know you aren't afraid of us and believe we are here... humans will one day board our humble spaceship for the next generation of our creations'... I heard this clearly and outwardly... I am afraid to tell my aunt of what I heard but what do I do? Do I spread the word?