"Whom shall he teach knowledge? and whom shall he make to understand doctrine? them that are weaned from the milk, and drawn from the breasts.
10. For precept must be upon precept, precept upon precept; line upon line, line upon line; here a little, and there a little:" Isaiah 29: 9-10
Isaiah 28: 9-10 is a Biblical "Hermeneutic." The dispensationalist, Christian Zionist or Separation Theology "Hermeneutic" is literal, of the letter (II Corinthians 3: 6), and self-fulfilling, starting from postulates not in agreement with scripture.
Isaiah 28: 10 says to put scriptures together in order to understand the word from God.
But dispensationalism does not do that according to Isaiah 28: 10. Instead, it divides what it thinks are the two peoples of God, when, in fact, there is only one people of God. In doing so, it confuses spiritual identities.
Jeremiah 18: 3-6: "Arise, and go down to the potter's house, and there I will cause thee to hear my words.
3. Then I went down to the potter's house, and, behold, he wrought a work on the wheels.
4. And the vessel that he made of clay was marred in the hand of the potter: so he made it again another vessel, as seemed good to the potter to make it.
5. Then the word of the LORD came to me, saying,
6. O house of Israel, cannot I do with you as this potter? saith the LORD. Behold, as the clay is in the potter's hand, so are ye in mine hand, O house of Israel."
II Kings 21: 13 and Isaiah 29: 16 point to Jeremiah 18: 1-6. "And I will stretch over Jerusalem the line of Samaria, and the plummet of the house of Ahab: and I will wipe Jerusalem as a man wipeth a dish, wiping it, and turning it upside down." " Surely your turning of things upside down shall be esteemed as the potter's clay: for shall the work say of him that made it, He made me not? or shall the thing framed say of him that framed it, He had no understanding?"
Separation Theology ignores II Kings 21: 13, Isaiah 29: 16 and Jeremiah 18: 1-6 because these scriptures are prophecies of a remaking of Old Covenant Israel, with which Separation Theology does not agree, and in fact, sets up a direct opposition to, which is the dialectic.
"Blessed be the Lord God of Israel; for he hath visited and redeemed his people,
69. And hath raised up an horn of salvation for us in the house of his servant David;" Luke 1: 68-69
God fulfilled II Kings 21: 13, Isaiah 29: 16 and Jeremiah 18: 1-6 in Luke 1: 68-69, and in other New Testament scriptures like I Peter 2: 5, 9. Christ redeemed his people which is Israel and in Acts 10 began to fulfill Hosea 2: 23, by bringing in non-Jews into redeemed Israel.
Then Paul explains in Romans 11: 1-5 that a remnant of Old Covenant Israel attained to election by grace, with the implication being that this remnant was the beginning of redeemed Israel of the Old Covenant, that is, the first of the New Covenant. Then in Romans 11: 17-20 Paul says those of Old Covenant Israel who were in unbelief and rejected Christ were cut off.