What does the phrase 'her warfare is accomplished' mean?

In Isaiah 40:2, the phrase 'her warfare is accomplished' speaks to the completed battle Christ waged against sin and the curse of the law on behalf of His people. The sermon teaches that through Christ's sacrifice, the demands of divine justice are met, and believers are freed from the bondage of sin. The warfare represents the inner turmoil and struggle each believer faces due to sin. When Christ says, 'It is finished,' it indicates that the necessary provisions for our salvation and peace with God are fully realized in Him, allowing us to rest in His completed work.