jaffacake....If your interested in reading more about the Christian concept of "salvation" in the context of early Judaism, I would recommend for you the book Ancient Judaism and Christian Origins by George Nickelsburg (c. 2003, Fortress Press). It has a chapter on salvation (Chapter 3, "God's Activity in Behalf of Humanity") which shows that there were different concepts of "salvation" with varying metaphors and circumstances, such as the OT concept of salvation as deliverance from evil and one's enemies (which had political connotations, especially among Zealots), salvation from sin, salvation from death, eschatological salvation from judgment, and salvation as revelation of knowledge. Many of these concepts overlap and different writings have different concepts of what constitutes salvation and what its scope is supposed to be.
Where does it say that not all who say Lord, Lord will be saved (or something like that).
The passage is from the Matthean Sermon on the Mount, which is clearly directed against a segment of the Christian church, as it refers to those who call on Jesus as "Lord, Lord" (cf. Romans 10:9, 13; 1 Corinthians 7:10, 12, 12:3) and who prophesy and perform works in his name (cf. Romans 12:6; 1 Corinthians 12:9, 28-30, 13:9, 14:5, 24, 31-39):
"Not everyone who says to me, 'Lord, Lord,' shall enter the kingdom of heaven, but he who does the will (i.e. works, not faith) of my Father who is in heaven. On that day, many will say to me, 'Lord, Lord, did we not prophesy in your name, and cast out demons in your name, and do many mighty works in your name?' And then I will declare to them, 'I never knew you, depart from me, you workers of lawlessness (anomia)." (Matthew 7:21-23)
There is an interesting parallel in 2 Clement: "Let us, therefore, not just call him Lord, for this will not save us. For he says, 'Not everyone who says to me, 'Lord, Lord,' will be saved, but only the one who does what is right.' ... The Lord said, 'If you are gathered with me in my bosom, yet you do not keep my commandments, I will throw you out and will say to you: "Depart from me, you workers of iniquity (anomia)." ' " (2 Clement 4:1-5). Contrast with Romans 10:9:
"If you confess with your mouth, ?Jesus is Lord,? and believe in your heart that God raised him from the dead, you will be saved" (Romans 10:9).
For a perspective on the Jewish-Christian Law-observant tradition and its attitudes towards the Law-free Pauline gospel, I would recommend the Pseudo-Clementines, which include second-century Ebionite works from a Petrine community close to that represented by Matthew, especially the Epistula Petri, the Kerygmata Petrou, the Itinerary of Peter, and the Ascents of James.