Creation and Creator are one i.e. Universe - Atheists
"All this, whatever exists in this changing world, is indeed Brahman" (Sarvam khalvidam Brahma) - Chandogya Upanishad 3.14.1
"I am Brahman" (Aham Brahmasmi). - Brihadaranyaka Upanishad 1.4.10
"He who sees all beings in his own Self, and his own Self in all beings, loses all fear." - Isha Upanishad 6
"I and the Father are one," pointing to non-separation. - John 10:30 (Bible, New Testament)
"I am the beginning, the middle, and the end of all things; I am the destroyer of the worlds, and I am the source of all things to come." - Bhagavad Gita 13.13
"To Allah belong the east and the west. Wherever you turn, there is the Face of Allah. Indeed, Allah is all-encompassing" - Quran 2:115 (Surah Al-Baqarah)
"The Creation is in the Creator, and the Creator is in the Creation, totally pervading and permeating all places." (Khaalik khalak khalak mehi khaalik poor rehiou srab thaanee). - Guru Granth Sahib, p. 1350 (Raag Parbhati Bhibhas)
Vivekachudamani Verse 231: "This universe is verily Brahman—such is the august pronouncement of the Atharva Veda. Therefore this universe is nothing but Brahman, for that which is superimposed (on something) has no separate existence from its substratum." - Adi Sankaracharya
All this universe which through ignorance appears as of diverse forms, is nothing else but Brahman which is absolutely free from all the limitations of human thought. - Adi Sankaracharya
"You are not a drop in the ocean. You are the entire ocean in a drop." - Jalalludin Rumi
"Between me and You, there is only me. Take away the me, so only You remain." - Mansur al-Hallaj
All scriptures and enlightened persons are saying the same thing: that creation itself is the creator (Non-Duality). The realization of this Non-Duality brings tremendous bliss and peace. This realization, the implementation of this realization in life, and constantly reminding oneself of it is called Moksha / Enlightenment / Samadhi / Nirvana / Liberation.
The concepts of rebirth, soul, God's judgement, and heaven and hell were created by smart people in the past who wanted to control people and instill moral values in them. Because in the past there was no proper justice system, this was necessary. To live in human communities and groups, such moral values and rules are necessary. From this fear of hell/punishment and greed for heaven arise prayers and rituals. Though praying gives comfort to people, it does not help in reality.
When one attains enlightenment, there is no rebirth (no birth, no death) because the ego does not exist anymore. As one completely embraces non-duality, he/she does not exist. Only the universe exists. The universe is energy. Science has proven that even matter is energy. Energy can convert to matter, and matter can convert back to energy. Even light is a form of energy. The universe is filled with energy, and everything we perceive as matter is composed of energy. This includes stars, galaxies, dark matter, light, heat, motion, and sound and even empty space. According to Einstein's equation, E=mc², mass and energy are equivalent, meaning that all matter can be described in terms of energy. This principle suggests that everything we see and experience in the universe is energy.
The Law of Conservation of Energy is a fundamental physics principle stating that energy cannot be created or destroyed, only transformed from one form to another. Thus, we are the universe. We are energy. And energy cannot be created or destroyed. So there is no birth or death. When the body dies, the energy gets converted to other forms like Agni (Fire), Vayu (Air), Jal (Water), Akash (Space), and Prithvi (Earth). So the energy remains and just changes form.
This universe/energy is intelligent but random. In Hindu terminology, we can describe it as Shiv (Intelligence) and Shakti (Energy). But this intelligence and energy are not different. It is ShivShakti. Even though it is intelligent, it is very random, and there is no fairness in it. The universe does not owe you fairness, because in reality you are not different from the universe.
Fun fact: Atheists are closer to truth and enlightenment compared to religious people who believe in God as a separate being from creation.