But it shall be one day which shall be known to the LORD, not day, nor night—this mysterious phrase describes a unique day outside normal temporal categories. The Hebrew yom echad (יוֹם אֶחָד) uses the same "echad" (one) as Genesis 1:5 ("one day") and Deuteronomy 6:4 ("the LORD is one"), suggesting unified, unique quality. "Known to the LORD" (yivvade l-Yahweh) indicates only God knows this day's timing (Matthew 24:36, "of that day and hour knoweth no man") and nature—it transcends human understanding of day/night cycles.
"Not day, nor night" (lo-yom ve-lo laylah) describes abnormal celestial conditions—neither full light nor complete darkness, continued from verse 6's ambiguity. Yet the promise resolves: "at evening time it shall be light" (le-et erev yihyeh or). When natural light should fade (evening), supernatural light appears. This reverses normal order, demonstrating God's control over creation. The light source isn't the sun but God Himself, anticipating Revelation 21:23: "the city had no need of the sun, neither of the moon, to shine in it: for the glory of God did lighten it, and the Lamb is the light thereof."
This "one day" marks transition from old creation to new. Isaiah 60:19-20 similarly prophesies: "The sun shall be no more thy light by day; neither for brightness shall the moon give light unto thee: but the LORD shall be unto thee an everlasting light." When Christ returns, He brings eternal day where there is no night (Revelation 22:5).
Historical Context
Ancient peoples marked time by solar/lunar cycles—day and night, months and years. A day that is "neither day nor night" defies natural order, signaling new creation. This echoes Genesis 1:3-5 when God created light before creating sun, moon, and stars (Genesis 1:14-18)—demonstrating light's source is ultimately God Himself, not celestial bodies. Zechariah's post-exilic audience would connect this to Exodus 13:21-22's pillar of cloud and fire providing continuous guidance, and to God's glory filling the tabernacle/temple. The New Testament develops this: John 1:4-5 identifies Jesus as the true light, John 8:12 records Jesus declaring "I am the light of the world," and Revelation depicts eternal light from God's glory.
Questions for Reflection
What does a day "known to the LORD" alone teach about trusting God's timing rather than demanding to know prophetic schedules?
How does the promise of light at evening time encourage believers facing darkness and despair that God will bring supernatural illumination?
What does God being the direct light source (rather than sun/moon) reveal about the new creation's God-centered rather than creation-centered focus?
Analysis & Commentary
But it shall be one day which shall be known to the LORD, not day, nor night—this mysterious phrase describes a unique day outside normal temporal categories. The Hebrew yom echad (יוֹם אֶחָד) uses the same "echad" (one) as Genesis 1:5 ("one day") and Deuteronomy 6:4 ("the LORD is one"), suggesting unified, unique quality. "Known to the LORD" (yivvade l-Yahweh) indicates only God knows this day's timing (Matthew 24:36, "of that day and hour knoweth no man") and nature—it transcends human understanding of day/night cycles.
"Not day, nor night" (lo-yom ve-lo laylah) describes abnormal celestial conditions—neither full light nor complete darkness, continued from verse 6's ambiguity. Yet the promise resolves: "at evening time it shall be light" (le-et erev yihyeh or). When natural light should fade (evening), supernatural light appears. This reverses normal order, demonstrating God's control over creation. The light source isn't the sun but God Himself, anticipating Revelation 21:23: "the city had no need of the sun, neither of the moon, to shine in it: for the glory of God did lighten it, and the Lamb is the light thereof."
This "one day" marks transition from old creation to new. Isaiah 60:19-20 similarly prophesies: "The sun shall be no more thy light by day; neither for brightness shall the moon give light unto thee: but the LORD shall be unto thee an everlasting light." When Christ returns, He brings eternal day where there is no night (Revelation 22:5).