Yes well its saved by grace through faith. Faith in both respects to the finished work of Jesus Christ, and then God perpares us for good works to do them.
The only difference is the israelites kind of knew because they had been trained for centuries...on what God required of them to be holy, but the gentiles were not..because God hasnt sent any prophets to the gentiles until Jesus pretty much. jesus said I have come for the lost sheep of Israel, but he also said there were other sheep that were not part of the flock that he wanted to let in. john 10:16
In Matthew 10, Jesus sends out the twelve to preach the "gospel of the kingdom." What was this gospel message Jesus and His disciples were going around preaching? Was it the same gospel message Paul taught throughout his ministry as defined in 1 Corinthians 15:3-4?
1 Corinthians 15:3-4
3 For I delivered unto you first of all that which I also received, how that
Christ died for our sins according to the scriptures;
4 And that
he was buried, and that
he rose again the third day according to the scriptures:
Is not this our gospel unto eternal salvation? Believing in the death, burial and resurrection of Jesus Christ for our sins? Of course. However, during the earthly ministry of Christ, the disciples had no clue about this gospel.
Luke 16
31 Then he took unto him the twelve, and said unto them, Behold, we go up to Jerusalem, and all things that are written by the prophets concerning the Son of man shall be accomplished.
32 For he shall be delivered unto the Gentiles, and shall be mocked, and spitefully entreated, and spitted on:
33
And they shall scourge him, and put him to death: and the third day he shall rise again.
34
And they understood none of these things: and this saying was hid from them, neither knew they the things which were spoken.
Did you notice that? The disciples had no clue about the death, burial and resurrection of Jesus. Why? God hid it from their minds unitl after it was accomplished.