Berean Study Bible (BSB) - Genesis 15:12 >

As the sun was setting, Abram fell into a deep sleep, and suddenly great terror and darkness overwhelmed him.

Jewish Publication Society of America Version (JPS1917) - Genesis 15:12 >

And it came to pass, that, when the sun was going down, a deep sleep fell upon Abram; and, lo, a dread, even a great darkness, fell upon him.