How do we know God's judgment on Ananias and Sapphira is true?

The account of Ananias and Sapphira in Acts 5 serves as a biblical affirmation of God's holiness and the certainty of His judgment against deceit within His church. Their deaths acted as a stark warning against hypocrisy, which is fundamentally a lie against the Holy Spirit. This event is recorded in Scripture to convey God's seriousness about integrity in the church. God's swift judgment underscores the principle that while mercy is extended, His justice will not be overlooked. It reinforces that, without a true acknowledgment of sin and repentance, individuals remain under condemnation, assuring the church remains pure and devoted to God’s glory.