Hi Keras,
I don't think so.
Galatians 6:16 is not a proof verse for you. There is absolutely no proof at all that Christians are meant by "Israel of God". The notion of "Israel" in verse 16 is rather a hint to Jews being meant, I guess.
Regards,
Thomas
I suggest that you read ALL of Galatians 6:14-16...
..all who take this [Christian] principal for their guide....are the Israelites of God.
The Overcomers for Him; literally the true Israelites.
Your 'guess' that it refers to Jews, is biased to suit your belief of a 'rapture to heaven' of the Church, while the Jews pass thru tribulation. None of that is in the Bible.
The New Testament writings are clear: there is only one Israel, who are the only one Church, only one elect, be they Jew or Gentile by birth.
1/ Israel, the chosen people of God: Exodus 15:13, Deuteronomy 33:3, Ezra 3:11
Christians, chosen of God: Romans 9:25, Ephesians 5:1, Col. 3:12, 1 John 3:1, Rev. 7:9
2/ Israel, the children of God: Deut. 14:1, Isaiah 1:2-4, Isaiah 63:8, Hosea 11:1
Christians, the children of God: John 1:12, Romans 8:14-16, Galatians 4:5-7, 1 John 3:1
3/ Israel, the scattered sheep of God: Psalms 78:52, Isaiah 40:11, Jer. 23:1-4, Ezekiel 34:12
Christians, His sheep: among the nations: John 10:14-16, Hebrews 13:20, 1 Peter 2:25
4/ Israel, God’s household: Hebrews 3:5, 1 Chronicles 29:14-18
Christians are God’s household: Hebrews 3:6, Hebrews 10:20-21, I Timothy 3:15, 1 Cor.3:9
5/ Israel are the priests of God: Exodus 19:6, Deuteronomy 27:9
Christians are the priests of God: Isaiah 66:21, 1 Peter 2:5-9, Rev. 1:6, Revelation 5:10
6/ Israel is the bride of God: Isaiah 54:5-6, Jeremiah 2:2, Ezekiel 16:32, Hosea 1:2
Christians are the bride of Christ: Isaiah 62:4-5, 2 Corinthians 11:2, Ephesians 5:29-32
7/ Israel is the vine and the olive tree: Isaiah 5:7, Hosea 9:10, Hosea 14:6-7
Christians are the vine and the olive: Luke 20:16, Romans 11:24
8/ Israelites are the circumcised: Genesis 17:9-14, Judges 15:18
Christians are the ‘circumcised’: Romans 2:25-29, Philippians 3:3, Col. 2:11
9/ Israelites are the children of Abraham: 2 Chronicles 20:7, Psalms 105:5-6, Isaiah 41:8
Christians are the spiritual children of Abraham: Romans 4:13-18, Gal. 3:7& 29, John 4:23
10/ The Covenant is with Israel: Deuteronomy 4:31, 2 Kings 17:34-36, Psalms 105:7-10
The New Covenant is with Christians: 1 Corinthians 11:25, Hebrews 8:6-10, Ezekiel 34:25
The above 10 proofs totally negate any argument that the Church and Israel are 2 separate entities. That premise is held and promoted by the pre-trib rapture exponents, who must have 2 groups; one removed to heaven, [themselves] and the Jews, [wrongly called; Israel] who remain on earth to face the Great Tribulation.