What does it mean for sin to have no dominion over Christians?

When the Bible states that sin shall not have dominion over believers, it signifies that, due to our union with Christ, we are no longer enslaved to sin. This is rooted in Romans 6, which explains that through His death and resurrection, Jesus has conquered sin's power in our lives. While believers may still struggle with sin, they are no longer under its rule or eventual condemnation because of their status as justified and sanctified in Christ. This victory assures us that we can live in the newness of life empowered by the Holy Spirit, ultimately leading to eternal life free from the presence of sin.