How do we know that human faithfulness is limited?

Biblical teaching illustrates that while some believers may be described as faithful, this isn't due to their flawless performance but rather their trust in a flawless God. Men may show periods of devout service, but these acts are ultimately comparative and cannot measure up to divine standards. Faithful Abraham is noted not for his perfect obedience but for his faith in the God who is perfect. This perspective emphasizes reliance on God rather than human deeds. True faithfulness echoes the reality that our performance falters, while God's integrity remains unchanged (2 Timothy 2:13).