user151: If you're a non-returner and you go to the Brahma realms, then that is the only way to attain Nibbana in the Brahma realms? Is it possible to attain Buddhahood in the Bramha realms?
Did the Buddha ever pass through the stage of non-returner or did he just jump straight to Buddhahood? An Arahant cannot become a Buddha? Aren't the 4 stages to enlightenment about mastering certain insights that one goes through momentarily?
He was the Buddha when he taught the Abhidhamma from Heaven?

user24707: Based on the Dharma sermons I've heard & read. If you mean "Anagami" — the 3rd stage of awakening — by "a non returner", then yes, all non-returners finish their awakening in the Brahma Realm. They are never reborn as humans, deva or other types of beings.
There are 31 Realms and all humans who achieved non-returner stage are born in Suddawasa Brahma Realm or ones above it.
Followers and others who are within the 4 stages of awakening can't become a Samma Sambuddha. BUT they can become a Buddha as the person who broke the cycle of being born again after reaching Arhat — the 4th stage of awakening. It's one of the meanings for the word Buddha.
I'm not sure the exact answer to your 3rd question, but I have seen various people who attained Arihat, Anagami, Sakrudagami and Sowan by just 1 Dhamma Sermon via the Tripitaka Sutras. So I think depending on the level of wisdom (Pragna) of the person, they can jump straight into a specific stage, but they still go through the stages from 1 to 4.
See the 3rd paragraph above on how we can consider Arahant as Buddha, but not as Samma Sambuddha.
I'm not sure the answer to your 5th question also.
Lord Buddha traveled to Deva Realms from the Human Realm when he taught the Abhidharma for the beings above the Human Realms.
Hope this answers your questions!

151: <p>If you're a non-returner and you go to the Brahma realms, then that is the only way to attain Nibbana in the Brahma realms? Is it possible to attain Buddhahood in the Bramha realms?</p>
<p>Did the Buddha ever pass through the stage of non-returner or did he just jump straight to Buddhahood? An Arahant cannot become a Buddha? Aren't the 4 stages to enlightenment about mastering certain insights that one goes through momentarily?</p>
<p>He was the Buddha when he taught the Abhidhamma from Heaven?</p>
 24707: <p>Based on the Dharma sermons I've heard &amp; read. If you mean &quot;Anagami&quot; — the 3rd stage of awakening — by &quot;a non returner&quot;, then yes, all non-returners finish their awakening in the Brahma Realm. They are never reborn as humans, deva or other types of beings.</p>
<p>There are 31 Realms and all humans who achieved non-returner stage are born in Suddawasa Brahma Realm or ones above it.</p>
<p>Followers and others who are within the 4 stages of awakening can't become a Samma Sambuddha. BUT they can become a Buddha as the person who broke the cycle of being born again after reaching Arhat — the 4th stage of awakening. It's one of the meanings for the word Buddha.</p>
<p>I'm not sure the exact answer to your 3rd question, but I have seen various people who attained Arihat, Anagami, Sakrudagami and Sowan by just 1 Dhamma Sermon via the Tripitaka Sutras. So I think depending on the level of wisdom (Pragna) of the person, they can jump straight into a specific stage, but they still go through the stages from 1 to 4.</p>
<p>See the 3rd paragraph above on how we can consider Arahant as Buddha, but not as Samma Sambuddha.</p>
<p>I'm not sure the answer to your 5th question also.</p>
<p>Lord Buddha traveled to Deva Realms from the Human Realm when he taught the Abhidharma for the beings above the Human Realms.</p>
<p>Hope this answers your questions!</p>
