6000 Years and the Cosmic Week
There is evidence that the Earth is almost 6000 years old and that God has setup human history in the form of one long cosmic week of one thousand year days.
First, God created all things in 6 literal days:
And God called the light Day, and the darkness he called Night. And the evening and the morning were the first day.
Genesis 1:5
God chose 6 literal days for a reason. He could have spoken everything into existence in the blink of an eye. He could have chosen to take longer or shorter at creation, however He chose 6 days.
After God finished creating, He rested on the 7th day:
And on the seventh day God ended his work which he had made; and he rested on the seventh day from all his work which he had made.
Genesis 2:2