How does the Bible define righteousness?

Righteousness in the biblical sense is understood as being in a right relationship with God, achieved through faith in Jesus Christ. Romans 3:22 states that the righteousness of God is through faith in Jesus Christ for all who believe. It is not attainable by works or human effort but is given freely by God’s grace. The concept is highlighted in Zechariah 8:8, where God promises to be a righteous God to His people. This righteousness grants believers peace and acceptance before God, underscoring the centrality of Christ's atoning sacrifice and the imputation of His righteousness to those who believe.