After becoming popular and attracting many followers, Jesus taught about what we call the Incarnation, the Son of God becoming human flesh. The Incarnation made it possible for people to have eternal life. Instead of being overjoyed at this news, many so-called followers turned away from Jesus in John 6:41-71. After asking the his original followers if they also wanted to leave him, Peter responded with a question that can serve as a lifeline to us when we find it difficult to believe. (full sermon notes)
In Jonah 3, we find that God did not give up on Jonah or on the people of Nineveh, which encourages us to believe...
Although many Jews did not believe the gospel and many non-Jews did, everyone who calls on the name of the Lord will be saved.
The opening of Luke's narrative about Jesus helps us know for certain the things we have learned about Jesus.