First cause isn't the same as the Big Bang. The Big Bang, or more accurately we should say nucleosynthesis, is an effect, not a cause. Popular Science (SciPop) promotes speculation about a possible first cause.
A Theory of First Cause
The Holy Trinity
1 John 5:7 gives us the Holy trinity. All three of them are present in Genesis 1:2 if "The Word" is God the Son, Jesus Christ, whom we have resolved with the deep.
January 24th
We (that's me and the Holy spirit) resolved the Holy Trinity with particle physics and we can now calculate the mass of the observable universe as a portion of the total mass of the universe.
January 2nd
How does Alpha and Omega become a Holy Trinity? This was the first ever example of cause and effect (first cause), and it’s the origin of gender.