What does the Bible say about the condition of humanity by nature?

According to Ephesians 2:3, 'Among whom also we all had our conversation in times past in the lusts of our flesh, fulfilling the desires of the flesh and of the mind; and were by nature the children of wrath, even as others.' This scripture clearly illustrates that all humanity, by nature, is in a state of spiritual death and disobedience. It highlights the critical need for God's intervention through His mercy to bring about salvation, as no one can achieve righteousness on their own.