I agree with Tresses, to me it sounds like you saw a divine being. I would also agree with the other comment someone said about paying attention to your body ques. If you did not feel threatened then it is because it was something or someone who meant only good for you in every intention.
That's not necessarily true in all instances, because a lot of things scare me that are paranormal but I know that for me there is a difference between fear for yourself and fear of the unknown. If I don't understand something I am probably going to be fearful of it. So don't take that advice with every situation you encounter lol. It is my "personal" belief that when it comes to divine beings whether good or bad you will sense it. I truly believe that we were all built to know the difference between good and evil. I have been afraid before in my own experiences but there is no fear to me like being in the presence of a "divine being" who is evil. Trust your instincts
P.S. I have heard from many people that when they saw Angels or Divine beings that they could not see there faces no matter how hard they tried to look. Either they couldn't move there head up, or there was a glare in the sky from the sun, that would make it so they could not see there face. When I was young I saw a beautiful being walk right in front of me but I could only see her feet as she walked passed me, with her beautiful dress. Her colors were so pure. My mom was braiding my hair so my head was pointed towards the ground already but as she walked by slowly I asked my mom who she was and she couldn't see her. I tried to put my head up but couldn't until she walked through the wall.