Stupid me

So the other day I was getting ready to go to the store when I heard a few knocks on my door. I looked out the peep hole and saw two ladies dressed in "Sunday Clothes" so I opened the door. They were nice and chatty and I saw some scriptures in their hands. I assumed they were from my new ward and they were stopping by to say hi. So when they said I guess you know who we are, I said "Yeah your from church right?" And they said "yes". So I invited them in and we began talking a little bit about being new to the area. Then one of them asked if I had a bible and I said "yeah let me get it" So then they pulled out the pamphlet that I had seen earlier attached to my door and had thrown away.... and that's when it hit me. They are not from my church, and it turns out they were Jehovah Witnesses. Now they were completely nice and we had a good discussion about the bible. But I just keep thinking, "stupid me and my assumptions, they could have been killers dressed for church" I have nothing against them at all and I appreciate that they were trying to share their beliefs (something I should do more of). Apparently one lives in our complex and asked to stop by again, of course I said she could but I also stated I was firm in my beliefs. Overall it was just my luck to completely misread the situation and invite strangers into my house, while I was alone. They must have thought "wow this lady is easy, just lets us right on into her house" I bet they don't get that too often.....At least I thought it was a funny.