Although there are many passages and interpretations throughout the gospels, the one, which stays consistent, is to believe in Christ. According to Michael Martin's, "The Case Against Christianity", he claims there are various creeds and Bible passages for personal salvation. The Synoptic Gospels reveal that baptism, repenting your sins, trusting and believing that Jesus is the Lord and Savior, doing good works, following church rituals and sacraments and/or avoiding certain specific behaviors are ways to salvation. Unfortunately, there are no set guidelines as to the precise combination required. In some instances, passages state all you need are good works to be saved and yet other passages claim all a person needs is to believe in Jesus. In addition, there are other passages, which require a person to have a combination of belief or action. The most general combination is baptism and/or repentance.
There is consistency through the Synoptic Gospels, Mark, Matthew, and Luke.
It is said that Matthew and Luke copied major portions of Mark into their own gospels, thus giving it its consistency just different verbiage. In these gospels, Jesus talks mainly about people being saved and how to inherit the Kingdom of God. These gospels state that salvation is relies on how people behave towards one another and that repentance, belief in Jesus, and baptism are immaterial. Lets start with Matthew.
The actions and attitude of people are the most significant as in the passage of Matthew 25:31-46. Here Jesus recites the parable the Sheep and the Goats. The sheep represent the "good doers" who will be at the right hand of Jesus while the goats are those who turn their backs on the people in need will be at His left. Those on the right will "inherit the kingdom for you from the foundation of the...