If the sun was closer to the earth then it would be too hot to sustain life. Further away and too cold. The moon is just the right size to effectively control the tides of the universe. Any smaller and it wouldn’t provide the needed benefits. Larger and it would be unstable. If gravity was altered in the most minuscule amount we would have no Sun and thus no life.
The Earth’s atmosphere is made up of 21 percent oxygen. Change that number to 25 percent and we would have spontaneous combustion. Drop the number to 12 percent and we would suffocate. The earth tilts at 23 degrees, any change in that would make temperatures too extreme for life. Move Jupiter and the Earth would have been destroyed by asteroids. If the orbit of the Earth around the Sun was altered results would be disatrous. Closer and we would be sucked into the sun. Farther away and the gravitational pull would be too weak and we would fly off into space.
All of the above factors and more (many many many more) are needed for our world to sustain life. This is the essence of the anthropic principle. Basically, it states that the fine-tuning exhibited in our world which allows for life shows design. And if design then a designer.
The question is what is more reasonable: That we are really lucky that all of these coincidences worked in our favor, or that the Earth has a design and therefore a designer. I believe the latter. Therefore, I believe in God.
Next post in this series we will discuss objections and what this teaches us about God.
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