What does the Bible say about Zacharias and Elizabeth's righteousness?

In Luke 1:6, it is stated that Zacharias and Elizabeth were both righteous before God, which indicates that they were among the elect. This righteousness was not due to their own merit but was an imputed righteousness through Christ. Despite their sinfulness, God regarded them as holy and acceptable because of the sacrificial work of their Redeemer. This imputation of righteousness illustrates the heart of sovereign grace theology, emphasizing that our standing before God is entirely based on His grace, not our works.