Romans 11:6-8

Young's Literal Translation

⁶ and if by grace, no more of works, otherwise the grace becometh no more grace; and if of works, it is no more grace, otherwise the work is no more work.

⁷ What then? What Israel doth seek after, this it did not obtain, and the chosen did obtain, and the rest were hardened,

⁸ according as it hath been written, `God gave to them a spirit of deep sleep, eyes not to see, and ears not to hear,' -- unto this very day,