I'll be happy to talk about the Olive Tree Doormat, though I don't even see how it's that important ...
I'll try and show you why it's important.
In Romans chapter 11, Paul is speaking of wild olive trees, and cultivated trees....the end of the discussion is...
Paul is not making up these ideas. They come from the Old Testament scriptures. Do you know what Paul understood the Olive Tree was based on the scriptures?
Judah (Israel).
Jeremiah 11:16 The LORD called thy name, A green olive tree, fair, and of goodly fruit: with the noise of a great tumult he hath kindled fire upon it, and the branches of it are broken.
Are you grafted into that Olive Tree or was Paul mistaken?
Exodus 4:22 Then say to Pharaoh, 'This is what the LORD says: Israel is my firstborn son,
Hosea 1:11 When Israel was a child, then I loved him, and called my son out of Egypt.
Matthew 2:15 where he [Christ] stayed until the death of Herod. And so was fulfilled what the Lord had said through the prophet: "Out of Egypt I called my son."
Israel is the body of Christ; compare Hosea 1:11 to Matthew 2:15 and just believe what it states. Christ is the king of Israel and you are a member of his body. It's simply not logically possible on any level that you and His body are not part of Israel.
Perhaps you mistake ethnic Jews living in nation called "Israel" as the true Israel of prophecy, but it's not. In time Christ will deal with those who call themselves Jews but are not.
Revelation 3:9 Behold, I will make them of the synagogue of Satan,
which say they are Jews, and are not, but do lie; behold, I will make them to come and worship before thy feet, and to know that I have loved thee.
Romans 9:6 Not as though the word of God hath taken none effect. For they are not all Israel, which are of Israel:
If you have been grafted onto the Olive Tree, as Paul claimed, then you have been grafted onto Israel, which is why Paul called the Ephesians fellow citizens of Israel.
Ephesians 2:12 That
at that time ye were without Christ, being
aliens from the commonwealth of Israel, and strangers from the covenants of promise, having no hope, and without God in the world:
Are you still an alien? If you still are then Paul's words are pointless because he is telling that you were once an alien but no longer are, hence you are a fellow citizen of Israel according to him.
Ephesians 2:19 Now therefore ye are no more strangers and foreigners, but fellowcitizens with the saints, and of the household of God;
In context and according to how "household of God" is defined throughout scripture, he means you are part of Israel. I hope that and the Olive Tree convinces you.