American Standard Version
And when the sun was going down, a deep sleep fell upon Abram; and, lo, a horror of great darkness fell upon him.

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

Douay-Rheims Bible
And when the sun was setting, a deep sleep fell upon Abram, and a great and darksome horror seized upon him.

English Revised Version
And when the sun was going down, a deep sleep fell upon Abram; and, lo, an horror of great darkness fell upon him.

King James Bible
And when the sun was going down, a deep sleep fell upon Abram; and, lo, an horror of great darkness fell upon him.

World English Bible
When the sun was going down, a deep sleep fell on Abram. Now terror and great darkness fell on him.

Young's Literal Translation
And the sun is about to go in, and deep sleep hath fallen upon Abram, and lo, a terror of great darkness is falling upon him;

Genesis 15:12 Additional Translations ...