As the Early Acts events that the Lord foretold in the 2nd half of Matthew 10 unfolded, with that, things ended up with Romans 11:25-27...
Implying the need to rightly divide, or lay out aright, the Scripture in light of a dividing line between Matthew 10:23, or Matthew 24:14, on one side, and Matthew 28:19, on the other.
For, as the Lord had informed that Gentile woman in Mark 7:27 "Let the children first be filled: for it is not meet to take the children's bread, and to cast it unto the dogs."
Per the above, said filling of "the children first," now awaited the fulness instead, that Romans 11:25 relates must first take place.
Romans 11:26-27 to take place at some point after what Romans 11:25 describes.
This is why, there is the important need, not only to rightly divide, or lay out aright, the Word of truth, but in light of what that dividing line is.
And even within said practice, there is also the important need to lay things out aright within Scripture as to distinctions between things, even with a same writer.
Acts 1:6, 7 being just one, of many examples of that.
All Scripture is for us, but, not all of it is to us, nor all about us alone.