It’s interesting how quickly people in the early church were trying to introduce something (in addition to Jesus) that was necessary for salvation. 

Acts 15:1 Some men came down from Judea to Antioch and were teaching the brothers: “Unless you are circumcised, according to the custom taught by Moses, you cannot be saved.”

In the midst of the controversy, Peter reminds these Jewish followers who believed the Gentiles needed to be circumcised to be saved of this:      Acts 15:9-11 He [God] made no distinction between us and them, for he purified their hearts by faith. Now then, why do you try to test God by putting on the necks of the disciples a yoke that neither we nor our fathers have been able to bear? No! We believe it is through the grace of our Lord Jesus that we are saved, just as they are.”

Beware of anyone who says you need faith in Jesus PLUS something else to be saved. 

As Peter said in Acts 4:12 – Salvation is found in no one else, for there is no other name under heaven given to men by which we must be saved.”

As Paul said in Eph. 2:8-9 – For it is by grace you have been saved, through faith — and this not from yourselves, it is the gift of God— not by works, so that no one can boast.

And as Jesus said of Himself in John 14:6 –  Jesus answered, “I am the way and the truth and the life. No one comes to the Father except through me.