The answer is: Plants and Fruit

Gen 1:29 - Man wasn't given meat to eat until after the flood (9:3)

In the grand narrative of Genesis, we see a peaceful portrayal of creation, where humanity's original diet is entirely based on plants and fruits. This fascinating aspect reflects a harmonious relationship with nature, showcasing that in the beginning, humans were vegetarian. It wasn't until after the flood, in Genesis 9:3, that God permitted Noah and his descendants to consume meat, signifying a significant shift in dietary laws and possibly a change in human circumstances following the flood's devastation.

Fun fact: The concept of eating plants as a primary source of sustenance continues to resonate today, as many people adopt plant-based diets for health and environmental reasons. So, we could infer that the "original diet" has seen quite the renaissance!

What’s particularly interesting is that the Hebrew term for “herb” in this context is often synonymous with 'all plants.' This implies not just leafy greens but a wealth of varieties including grains, fruits, and herbs right from the garden of Eden. This plant-centric diet is echoed in later biblical practices where fasting, offered in simplistic offerings, often centered around fruits and grains.

Moreover, the partnership established between God, humans, and nature reflects themes of stewardship—we were given the Earth and its bounty, and in return, we are to protect and nurture it. As we unfold the layers of each biblical text, clues emerge about ideals of sustainable living and community within the intricate design of creation.