The sun to rule by day: for his mercy endureth for ever:

PSALMS 136:8KJV
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What does Psalms 136:8 mean?

Psalms 136:8 praises God for giving the sun its place over the daytime. The verse treats the sun’s regular appearance as part of God’s care for the world, and it joins that gift to the lasting mercy of the one who made it.

The picture is of the sun as a ruler presiding over the day. After verse 7 speaks of the great lights, verse 8 gives the sun its particular role. The repeated words “for his mercy endureth for ever” give the praise a response that could be spoken or sung by a group.

The Hebrew behind Psalms 136:8

  • “rule” — מֶמְשָׁלָה (memshalah): This word can mean rule or a sphere of authority. Here it describes the sun’s assigned place over the day, using the language of a ruler.
  • “mercy” — חֶסֶד (ḥesed): This word often carries the sense of faithful kindness or steadfast love. The KJV’s “mercy” points here to kindness that continues, not merely a single act of pity.
  • “ever” — עוֹלָם (ʿolam): This word can refer to a very long or lasting time. With “endureth,” it gives the refrain its sense of mercy that goes on without end.

Why Psalms 136:8 matters

  • The sun’s role is presented as something God gave, not as power the sun holds on its own. The preceding verse credits God with making the lights, and verse 8 assigns the sun its rule.
  • The verse pairs a daily pattern with a lasting claim about God’s kindness. “By day” marks the sun’s regular role, while “for ever” gives the mercy a wider span.
  • The matching line about the moon and stars in verse 9 completes the picture: day and night each have their own lights and their own place in the praise.

Where else these words appear

“rule” Hebrew H4475 · used in 16 verses

  • Genesis 1:16 And God made two great lights; the greater light to rule the day, and the lesser light to rule the night: he made the stars also.
  • Psalms 103:22 Bless the LORD, all his works in all places of his dominion: bless the LORD, O my soul.
  • Isaiah 39:2 And Hezekiah was glad of them, and shewed them the house of his precious things, the silver, and the gold, and the spices, and the precious ointment, and all the house of his armour, and all that was found in his treasures: there was nothing in his house, nor in all his dominion, that Hezekiah shewed them not.

“sun” Hebrew H8121 · used in 127 verses

  • Genesis 15:12 And when the sun was going down, a deep sleep fell upon Abram; and, lo, an horror of great darkness fell upon him.
  • 2 Samuel 2:24 Joab also and Abishai pursued after Abner: and the sun went down when they were come to the hill of Ammah, that lieth before Giah by the way of the wilderness of Gibeon.
  • Ecclesiastes 5:18 Behold that which I have seen: it is good and comely for one to eat and to drink, and to enjoy the good of all his labour that he taketh under the sun all the days of his life, which God giveth him: for it is his portion.