Original Verse:
Romans Chapter 11 Verse 21for if God spared not the natural branches, neither will he spare thee.

Reference Verses:
Jeremiah Chapter 49 Verse 12For thus saith Jehovah: Behold, they to whom it pertained not to drink of the cup shall assuredly drink; and art thou he that shall altogether go unpunished? thou shalt not go unpunished, but thou shalt surely drink.
Luke Chapter 23 Verse 31For if they do these things in the green tree, what shall be done in the dry?
John Chapter 15 Verse 1I am the true vine, and my Father is the husbandman.