Could an all-powerful, all-knowing God reveal information to us in such a way that we can be absolutely certain that He exist?

In the Bible, God appeared the people of Israel and they did not like the presence of the All mighty... thus they told Moses that would rather have him talk with them in behalf of God and that they would listen to Moses. Most of them did not listen to Moses and they did died in their sins. God then came down again to the same people as the man Jesus (the Christ) after telling them again and again that He would, yet they rejected Him because He did not perform as they think God should -Powerful. Jesus states that John the Baptist came neither eating and drinking, and they said he had a devil. But the Son of Man (Jesus Christ) came eating and drink, and they say he is a friend of sinners.

it was and I do

If there was a god, everyone would know it and there would be 1 religion.

I am absolutely sure God exist. Flesh and blood did not reveal this, but my Father which is in heaven.

And I thank Him and worship Him everyday.

He has. If you don't believe Moses, the Law, the prophets, 6000 years of God saving a specific race of people for a specific purpose, or a man rising from the dead, what else would you have God do?

I thought he already did? Look around you someone made this planet habitable. Someone put all these amazing plants and flowers and animals here. So what more do you need?

Of course.

If an omnipotent benevolent god had created us and wanted us to know so, it could simply have us born with the knowledge of its existence, and what, if anything, it wants from us.

This does not affect free will, because:

1) Even people who are 100 percent sure of their religion (the vast majority of people who have ever lived) still commit what their religion considers sins

2) The deity could still give us free will anyway, otherwise it wouldn't be omnipotent

It would not use humans as prophets to get its message out, since clearly that channel of communication results in contradictory messages, and cannot be distinguished from messages that are not from the deity but only from the prophet (lies and insanity). The fact that there are many contradictory religions proves this beyond doubt.

From this reasoning, I conclude that either

a) we were not created by a deity at all, or

b) we were created by one that is not omnipotent, omniscient, and/or benevolent, or

c) we were created by a deity that doesn’t care if we know it created us and has no demands of us.

I believe a) is correct.

If an omnipotent God existed such a being absolutely could. If such a being existed.

I would like to see an empty wooden cube (just a frame) floating one meter above the ground. It is unmovable and explosives, fire, lasers and acid have had no effect on it.

And, the vertical surfaces would seem to be like computer screens to our eyes, but we could put our arms through the squares -- there is no glass.

And we would see scripture scrolling, however, if two (or more) people who have different first languages were looking at it at the same time, they would see it in their native language.

Christians like to pretend that he can and does, but when you ask them what he showed them, it's almost always a daydream or a hallucination.