Why is grace necessary for Christians?

Grace is necessary for Christians because it is through grace that we are saved from our sinful nature. Luke 4:28-30 emphasizes the hostile response of people when confronted with the message of grace, which often reveals their pride and rebellion against God. Every human being is by nature a sinner, in need of divine intervention to be reconciled with God. Without grace, we remain in our enmity and do not seek God. As Ephesians 2:8-9 clarifies, we are saved by grace through faith, and this is not of ourselves; it is the gift of God, highlighting grace's crucial role in salvation and spiritual regeneration.