What's the 'Therefore' there for?

I have some thoughts-a-brewin', however i have such a massive headache that that must wait. As C.S. Lewis once said, "I could write a great sermon on victory over pain if i could just get over this headache." ;-P

So until then... i started my last post with, "Therefore," therefore i will now show you what the, "Therefore," is there for.

²⁵For I do not want you, brethren, to be uninformed of this mystery--so that you will not be wise in your own estimation--that a partial hardening has happened to Israel until the fullness of the Gentiles has come in;

²⁶and so all Israel will be saved; just as it is written,
"THE DELIVERER WILL COME FROM ZION,
HE WILL REMOVE UNGODLINESS FROM JACOB."
²⁷"THIS IS MY COVENANT WITH THEM,
WHEN I TAKE AWAY THEIR SINS."

²⁸From the standpoint of the gospel they are enemies for your sake, but from the standpoint of God's choice they are beloved for the sake of the fathers;

²⁹for the gifts and the calling of God are irrevocable.

³⁰For just as you once were disobedient to God, but now have been shown mercy because of their disobedience,

³¹so these also now have been disobedient, that because of the mercy shown to you they also may now be shown mercy.

³²For God has shut up all in disobedience so that He may show mercy to all.

Oh, the depth of the riches both of the wisdom and knowledge of God! How unsearchable are His judgments and unfathomable His ways!

³⁴For WHO HAS KNOWN THE MIND OF THE LORD, OR WHO BECAME HIS COUNSELOR?

³⁵Or WHO HAS FIRST GIVEN TO HIM THAT IT MIGHT BE PAID BACK TO HIM AGAIN?

³⁶For from Him and through Him and to Him are all things To Him be the glory forever. Amen.