The phrase "we are all sinners" is a common expression, particularly within Christian theology, reflecting the belief that all humans are inherently flawed and prone to wrongdoing. This concept, often referred to as "original sin" or "total depravity," suggests that everyone, except for Jesus Christ, is born with a sinful nature that affects their thoughts, actions, and desires.
While the specific interpretations and implications of this concept vary across different Christian denominations, the fundamental idea is that no one is perfect and all fall short of God's standards.