Does the Bible give clues as to how old the earth is?
In Mark 10:6 Jesus said, 'But at the beginning of creation God "made them male and female".' But if the universe is billions of years old then Jesus' statement is false because people did not arrive 'at the beginning' but 'close to the end'.
The chronogenealogies in Genesis 5 and 11 document that there was 2009 years between the creation of Adam and the birth of Abraham. Since Abraham lived close to 2000 BC this gives a date for the creation week of around 4000 BC