“In the beginning, God created the heavens and the Earth...” You have knowledge of when the beginning was? Please share.
You are right. “In the beginning God created the heavens and earth.” Genesis, chapter 1, verse 1. But wait, there’s more! (Surely, though, you are so wise you already know this.) The first chapter of Genesis in the Bible describes the first seven days of earth’s creation. On the sixth day, God created man. We know him as Adam.
Later in the Bible, you can read the genealogy of Jesus, back to Adam. Jesus lived in the form of man and walked our earth just over 2,100 years ago. He still lives today, but that is for another discussion.
Thus, since we know the genealogy of Jesus, back to the beginning of time and earth as we know it, we also know that the earth is not 400,000 million years old. Thousands of years, yes. Millions, no.
Hope this helps. God bless you and your family.
Are you mocking the idea of when God created, or if God created?