Many frequently used sayings come directly from the Bible.
Here are just a few...
He'll go the second mile (Matthew 5:41).
I saw the handwriting on the wall (Daniel 5:5).
A leopard cannot change its spots (Jeremiah 13:23).
She thinks she's holier-than-thou (Isaiah 65:5).
I escaped by the skin of my teeth (Job 19:20).
She's the apple of my eye (Deuteronomy 32:10).
He's a man after my own heart (1 Samuel 13:14).
It's a case of the blind leading the blind (Matthew 15:14).
This place is a den of thieves (Matthew 21:13).
That man is a thorn in my side (2 Corinthians 12:7).