Grace is misunderstood by many people to mean that salvation can be gained freely without any effort on their part. However, God's grace is actually an extension of time and opportunity provided to humanity to prove themselves worthy of salvation by obeying God's laws. While grace is a free gift through Christ's sacrifice, it does not guarantee salvation unless that time is used to obey God. Grace was necessary because of humanity's fall into sin but it does not negate the requirement to follow God's commandments in order to gain eternal life.