Then the magicians said unto Pharaoh, This is the finger of God: and Pharaoh's heart was hardened, and he hearkened not unto them; as the LORD had said.
And the LORD hardened the heart of Pharaoh, and he hearkened not unto them; as the LORD had spoken unto Moses.
And he hardened Pharaoh's heart, that he hearkened not unto them; as the LORD had said.
But "Pharaoh's heart was strong, and he hearkened not unto them.
He was henceforth himself to become an evidence and a portent; and so "The Lord made strong the heart of Pharaoh, and he hearkened not unto them" (ix.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "hearkened not unto them" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.