Isaiah 40:4: every valley shall be lifted up, and every mountain and hill made what?

Answer: Low

Every valley will be lifted up and every mountain and hill made low; the uneven ground will become smooth and the rugged land a plain.

“Every valley shall be lifted up, and every mountain and hill made low; the uneven ground will become smooth, and the rugged land a plain.”— Isaiah 40:4 (BSB)