Quote from article: Without Jesus, there is no provisionary salvation—that is, salvation is based on man’s effort rather than God’s grace. Without the Holy Spirit, there is no sanctification, no peace, no freedom (Romans 8:6; 2 Corinthians 3:17). Christians trust that by Jesus’ death and resurrection, along with the indwelling of His Spirit, sin is forgiven, the conscience is cleansed, and the human soul is freed to pursue God and goodness without the fear of punishment (Hebrews 10:22).
This is where Paul missed the point when he concocted this idea that somehow people need salvation to save themselves from themselves. In fact, salvation is only needed to recover some kind of loss. Muslims don't need salvation because they already believe that they were born without sin so if they did nothing in their life, they will still go to heaven. It is the wrong things that they do that move them away from heaven. Secondly, unlike Christian teachings that human beings are prone to sin, Islam teaches that human beings have a natural inclination to do the right thing. Just do the experiment yourself. Plan to do something good and see how excited you become. Then plan to do something wrong and see how tormented you become. One have to think long and hard to do something wrong while they instantaneously do good things. So since God in His infinite mercy places us in the world sinless, He does not need to devise any salvation plan especially one where He couldn't come up with something better than shedding someone's blood. God can wipe away all the sins of every human being just by decreeing it. He doesn't have to become blood thirsty and He didn't.