Yes it was and is a promise to Israel. Just as the new-birth is a promise to Israel. Just as the New Covenant is a promise to Israel. (Jer. 31:31-34) And though Israel has not yet come into the experience of this New Covenant, she will. God is clear here. (Jer. 31:35-37)
"Israel" in the Christian scriptures is not fleshly Israel. Jesus had already rejected fleshly Israel...he knew who was going to have him put to death.
He said at Matthew 23:37-39.....
"Jerusalem, Jerusalem, the killer of the prophets and stoner of those sent to her—how often I wanted to gather your children together the way a hen gathers her chicks under her wings! But you did not want it. 38 Look! Your house is abandoned to you. 39 For I say to you, you will by no means see me from now until you say, ‘Blessed is the one who comes in Jehovah’s name!’”
In the 2,000 years since Jesus walked the earth, have the Jews hailed him as the one who came in the name of his Father? What makes you think they ever will? As a nation they were cast off, but as individuals, they could always come to Jesus and acknowledge him as Messiah.
According to Paul, "the Israel of God" are not fleshly Israel but the spiritual nation that gathered to Jesus Christ as his disciples. These were made up of both Jewish and Gentile Christians. (Galatians 6:16)
Romans 2:28-29....
"For he is not a Jew who is one on the outside, nor is circumcision something on the outside, on the flesh. 29 But he is a Jew who is one on the inside, and his circumcision is that of the heart by spirit and not by a written code. That person’s praise comes from God, not from people."
Romans 9:6-8...
"For not all who descend from Israel are really “Israel.” 7 Neither are they all children because they are Abraham’s offspring; rather, “What will be called your offspring will be through Isaac.” 8 That is, the children in the flesh are not really the children of God, but the children by the promise are counted as the offspring."
God chose a new nation....those who would take Israel's place because of their unfaithfulness and inability to obey God's laws.
Concerning Peter's quote of (Joel) you failed to give it all. Peter is clear that the coming of the Holy Spirit at that time was that which was prophesied by (Joel). (Acts 2:16) "But this is that which was spoken by the prophet Joel" Thus the promise of prophesying, dreams, and visions given by the Holy Spirit, is for today.
No, he applied that prophesy, written some 800 years previously, in the first century....it was fulfilled at Pentecost.
What is being addressed in (1 Cor. 13:10) is the complete mature unified Body of Christ. Paul is clear here when again he addresses the gifts of the Holy Spirit in (Ephesisans 4:7-16). (Eph. 4:13) "Till we all come in the unity of the faith, and of the knowledge of the Son of God, unto a perfect man, unto the measure of the stature of the fulness of Christ" That is an ongoing process by the Holy Spirit today of which the gifts are part of. (4:12)
Tell me, who are going to heaven according to your beliefs....? What will they do there?
When it says...""Till we all come in the unity of the faith, and of the knowledge of the Son of God, unto a perfect man, unto the measure of the stature of the fulness of Christ"...who is this talking about? Who is "we"?
As I have said, none of this removes the importance of Scripture. None of this will contradict Scripture. And of course satan can imitate such gifts as he imitates everything created by God. But we have the Holy spirit which will give discernment in that area.
It occurs to me that the holy spirit had no failures back in the first century. When people came to be cured of their illnesses and infirmities, Jesus cured them all. If its the same holy spirit today performing these miracles, then why are there so many failures?
When people speak in tongues, why is it gobbledygook? In the first century the foreign languages were for the benefit of those who had come to Jerusalem for the festival from foreign lands. Each heard the gospel in his native language. (Acts 2:4-11) The great deceiver is a mimic but many will be deceived and therefore rejected at the judgment. (Matthew 7:21-23)
God performs miracles in every age, so I don't understand your statement that this is not an age of miracles. We do not walk as Jesus did doing miracles left and right. But as children of God, miracles should and will occur in our association with one another and our gift ministry by the Holy Spirit. The gifts themselves are miraculous.
I believe that God has deliberately withheld miracles from this time period because the only one performing these so called miracles will be satan. People want to have their ears tickled. (2 Timothy 4:3-4) And today especially, people have the attitude that they don't need knowledge....all they need is to "believe on the Lord Jesus and you will be saved"....what does it actually mean to "believe"? (James 2:19)
Is Christianity based on emotion or knowledge?