📖 Biblical Definition
The basic biblical unit of time, reckoned in Hebrew thought from evening to evening (and the evening and the morning were the first day, Gen 1:5); also a theological term for fixed appointments of God: the day of the Lord, the day of judgment, the last day, that day. The Lord owns time; He apportions days; He has appointed one Day on which He will judge the world (Acts 17:31).
📜 Webster 1828 Definition
DAY, n.
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1. That part of the time of the earth's revolution on its axis, in which its surface is presented to the sun. 2. The whole time of the earth's revolution on its axis, including night and day. 3. Day of the Lord — in scripture, a time of divine judgment.
📖 Key Scripture
Genesis 1:5 — "The evening and the morning were the first day."
Psalm 118:24 — "This is the day which the Lord hath made; we will rejoice and be glad in it."
Acts 17:31 — "He hath appointed a day, in the which he will judge the world in righteousness."
2 Peter 3:8 — "One day is with the Lord as a thousand years, and a thousand years as one day."
⚠️ Modern Corruption
Modern man counts hours; the Bible counts days — including the day Acts 17:31 promises is fixed.
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Acts 17:31 is one of Paul's most precise theological statements: he hath appointed a day, in the which he will judge the world in righteousness by that man whom he hath ordained; whereof he hath given assurance unto all men, in that he hath raised him from the dead. The Day is fixed. The Judge is named. The proof is the resurrection. Modern philosophers can dispute every premise; the Lord has put the empty tomb on the public record as guarantee.
Psalm 118:24 names the proper response to the day in front of you: this is the day which the Lord hath made; we will rejoice and be glad in it. Whatever today contains — loss, labor, gift, grief — the Lord made it and presents it. Receive the day. Live it well. The fixed Day is coming; the daily days are training for it.
🔗 Greek & Hebrew Roots
Hebrew yom (H3117); Greek hemera (G2250).
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Usage
"The Day is fixed. The Judge is named. The proof is the resurrection."
"This is the day which the Lord hath made — whatever it contains, He presents it."
"Daily days are training for the fixed Day; live them well."