What does the Bible say about the corruption of human nature?

The Scriptures, particularly in Genesis 6:5, reveal that 'the wickedness of man was great in the earth, and that every imagination of the thoughts of his heart was only evil continually.' This reflects the total depravity of human nature, which is a theme echoed throughout the Bible. The fall in Genesis chapter 3 corrupted human nature, resulting in a heart inclined towards evil. Romans 5:12 clarifies that 'by one man sin entered into the world,' establishing the doctrine of original sin which asserts that all humans are affected by this inherent corruption as descendants of Adam.