Why is the struggle with sin important for Christians?

For Christians, the struggle with sin is a vital aspect of spiritual life, indicating that they have been genuinely quickened by God's Spirit. As discussed in Romans 7, Paul elaborates on the internal conflict he experiences, stating that although he desires to do good, he often finds himself doing the very opposite. This struggle is evidence of the new nature created by God; it reflects the ongoing sanctification process. In Genesis 25:22, Rebekah felt the struggle between her twins, symbolizing the battle that occurs within believers between the old man of sin and the new man in Christ. It serves as a reminder that while believers are redeemed, they are not yet perfected and must rely on Christ for strength and victory over sin.