I still contend that those far off is scattered Israel
James said Peter declared that God called out the Gentiles in Acts 10:45
[Act 15:14 KJV] 14 Simeon hath declared how God at the first did visit the Gentiles, to take out of them a people for his name.
James said the calling out of the Gentiles is found in the prophets which he then quotes Amos 9:11-12 in verse 16 below.....this is talking about setting up the Davidic kingdom on earth.
[Act 15:15-17 KJV] 15 And to this agree the words of the prophets; as it is written, 16 After this I will return, and will build again the tabernacle of David, which is fallen down; and I will build again the ruins thereof, and I will set it up: 17 That the residue of men might seek after the Lord, and all the Gentiles, upon whom my name is called, saith the Lord, who doeth all these things.
In the kingdom the Gentiles will flow to Jerusalem to seek the Lord......these are not the far off in Acts 2:39
[Isa 2:2-3 KJV] 2 And it shall come to pass in the last days, [that] the mountain of the LORD'S house shall be established in the top of the mountains, and shall be exalted above the hills; and all nations shall flow unto it. 3 And many people shall go and say, Come ye, and let us go up to the mountain of the LORD, to the house of the God of Jacob; and he will teach us of his ways, and we will walk in his paths: for out of Zion shall go forth the law, and the word of the LORD from Jerusalem.
We might not see eye to eye on Acts 2:39, so lets set that aside, and look at the other three times these are used where they apply to the Gentiles very clearly in context
Acts 22:21 far hence, Ephes 2:13 afar off, Ephes 2:17 afar off
Concerning repentance itself both Jews and Greeks are testified to concerning this (In Acts 20:21, see below)
We also see where the Gentiles had the gift of the Holy Ghost poured out upon them before being baptized by water as it is written here
Acts 10:45-46 And they of the circumcision which believed were astonished, as many as came with Peter, because that on the Gentiles also was poured out the gift of the Holy Ghost.For they heard them speak with tongues, and magnify God.
Peters command concerning them in the context of water baptism
Acts 10:47-48 Can any man forbid water, that these should not be baptized, which have received the Holy Ghost as well as we? And he commanded them to be baptized in the name of the Lord. Then prayed they him to tarry certain days.
Peter again recounts the situation concerning the Gentiles here and the circumcision understood this to mean "God also to the Gentiles granted repentance unto life."
Acts 11:18 When they heard these things, they held their peace, and glorified God, saying, Then hath God also to the Gentiles granted repentance unto life.
Fast foward to Acts 20:21 where Paul speaks of testifying to both Jews and Greeks (as mentioned above) concerning repentance itself
Acts 20:21 Testifying both to the Jews, and also to the Greeks, repentance toward God, and faith toward our Lord Jesus Christ.
Here is where my mind could possibly be changed, seeing that in Acts 18:8 it says
Acts 18:8 And Crispus, the chief ruler of the synagogue, believed on the Lord with all his house; and many of the Corinthians hearing believed, and were baptized.
Which was Paul doing so, as he writes
1 Cr 1:14 I thank God that I baptized none of you, but Crispus ...
Crispus being a the chief ruler of the synagogue would be a Jew
But then he says,
....and Gaius in the same breath (I get everything from Gentile, or Jew and Gentile concerning him)
1 Cr 1:16 And I baptized also the household of Stephanas: besides, I know not whether I baptized any other.
1 Cr 1:17 For Christ sent me not to baptize, but to preach the gospel: not with wisdom of words, lest the cross of Christ should be made of none effect.
Regardless, moving on Paul retells us the order of things
Acts 26:20 But shewed first unto them of Damascus, and at Jerusalem, and throughout all the coasts of Judaea, and then to the Gentiles, that they should repent and turn to God, and do works meet for repentance.
Saying that both were to repent and turn to God, and do works meet for repentance.
And shows Jews first more specifically and then them turning to the Gentiles here
Acts 13:46 Then Paul and Barnabas waxed bold, and said, It was necessary that the word of God should first have been spoken to you: but seeing ye put it from you, and judge yourselves unworthy of everlasting life, lo, we turn to the Gentiles.
Regardless Paul tells the Gentiles the following
Rom 11:13-14 For I speak to you Gentiles, inasmuch as I am the apostle of the Gentiles, I magnify mine office: If by any means I may provoke to emulation them which are my flesh, and might save some of them.
Again, even if we set aside Acts 2:39 and look at Acts 22:21 far hence, Ephes 2:13 afar off, Ephes 2:17 afar off in each of their contexts (as laid out below) each pertains to the Gentiles
Acts 22:21 And he said unto me, Depart: for I will send thee far hence unto the Gentiles.
Ephes 2:13 But now in Christ Jesus ye who sometimes were far off are made nigh by the blood of Christ.
Ephes 2:17 And came and preached peace to you which were afar off, and to them that were nigh.