This didn't really happen to you did it. You created a story to give you an excuse to hear yourself speak.
1. The known universe is enormous, on a scale way beyond human comprehension.
2. The universe is very old - at least 14 billion years have passed since the (last?) big bang.
3. It is nearly a matter of mathematical certainty arising from the laws of physics, chemistry and biology that the universe is teeming with life outside our own planet.
4. Our own human has only enjoyed a techno-boom of less than a hundred years. There has been life of one sort or another on earth for about 3 billion years.
5. It follows that the overwhelming majority of life in the universe will be hundreds of millions - and probably billions - of years in advance of our own.
6. It then follows that plenty of "them" could do virtually anything not prohibited by the real laws of physics (whatever they are) - and this means one hell of a lot more than we can even dream about. Even if the velocity of light in vacuo is the barrier it appears to be, and if wormhole travel is as infeasible as it appears to be, "they" would still be able to get here from an immense enough space-volume to ensure that there would be plenty of types of "them" to qualify from... they have had a long time, and earth has been interesting for billions of years.
7. So "they" exist and could certainly do what proplog2 suggests.
8. A better question is - why, why, why would they want to? They would be benevolent - we would have nothing of value to them, only be curiosities to be nurtured or observed - so why, why, why make their presence known at all when it would be trivial for "beings" that advanced to prevent it? Or is our response to such events of interest? Or are we being gradually prepared for a close encounter of the third kind on a large scale?
9. However, even I do not claim to know the mind of "god"s.
10. I prefer gods-of-the-Roswell to Jehovah-of-the-Watchtower.