As the subject mentions, we are going to discuss about theists, atheist or is there any third way of knowledge about existence of God and related phenomena.
In general, we categorise people among these groups, the people who believe in their God or his existence and other people who don’t believe in it. You might have come across the concept that this both categories are nothing but same and there is chance that something else does exist.
Now first of all, we want to concentrate or focus on the fact that why it is called as believers and nonbelievers are two sides of same coin. Also,one thing you might have noticed that believers believe that God exist, whereas atheist believe that God does not exist . Now check closely the fact that both these categories assumes something whether it is existence or non-existence about the God. None of the parties have made any experiment to confirm their claim about God being him as existant or non existant. This is how it has been explained that both believers and non-believers of God are on same side who do not make any experiment and without any evidence they have started assuming something taking some scripture or messages of some messenger as a standard.

Next point is, there are some traditions or groups who make experiment, find observations and reach out to some concrete inferences. There also you will find that non-believers exist in such group. Now how you look at this? Basically what has happened is the group of people or devotees, following their traditions have recorded the same experiences, but they have interpreted them differently. This is another point wherein evidence-based system also has reached to the result about existence or non-existence of God.

But there is one thing for sure if you follow the opinions of believers or non-believers who do not make any experiments, and without any reason after getting their minds conditioned due to some reasons, you also might fall in the categories of blind believers. If you start believing on their interpretations and inferences of experiment made by the traditions or devotees of that particular path – Then also you do not have any evidence-based opinion on your own because what ever the experiences and their inferences collected by that group of people about existence or non-existence of God is rather surreal. So these results cannot be exhibited to the public in open. In Modern scientific world , still many are trying, but the fact has remained secret since ages.

So it’s best that you do not take the side of any of that two but start your experiments on your own wherein your body and your mind is your laboratory and experience is derived in this laboratory through the experiments of Sadhana which can make you reach to some experiences and their inferences. In this case, you have will the right to interpret all those experience on your own also you have a better chance and a responsibility to present those experiments with their interpretations without any political dogma and you will have confidence in your observations ..

We will take one Bhagwat Gita Shloka for reference. The complete meaning for this Shloka has been given as below.

The object of senses will become irrelevant(, but does not get lost) who has followed the practice of Neerahaara and when such devotee gets the vision of the ultimate, the desires and attractions inherent to these objects of senses will get vanished.

we want to put your focus to words ‘परं दृष्ट्वा’ pronounced as ‘Param Drashtva’. This has been clearly indicated in this Shloka, that the ultimate can be brought into a vision. You can see him in some form so the existence which is beyond the range of your senses can be brought into Such range. So if our Scriptures and the experiences of our ancient people support this phenomena then it is worth while to think that when there is a possibility to have a vision or confirmation about existence of God, then why it is necessary to believe on something or sayings of some people.

In conclusion, I would like to make only one point that the human should make all his effort to derive this experience which will lead him to the knowledge instead of putting himself into the conservative belief system. You can bypass this belief system when you have your own experience.