Meaning of Numbers: The Number 321
The possible meaning of the number 321 is derived from the Jubilee year and the occurrence of certain words in the King James translation.
A Jubilee year, which begin and end on the Day of Atonement, is declared after seven sets of seven Sabbatical years (49 years) are completed (Leviticus 25). Jubilees were intended to be a joyous time when slaves were set free and property returned to their original owners.
The first Jubilee after Jesus' birth ran from 26 to 27 A.D. The year 320 A.D. marked the start of the seventh Jubilee since the Lord was born. It ran from September 28 (Wednesday) in 320 A.D. to September 18 (Monday) in 321.
Appearances of Number Three Hundred Twenty One
The English word "altar" is written 378 times in 321 King James Bible verses. It is recorded the most in Leviticus (87 times) followed by Exodus (59) and then 1Kings (34). 21 out of the 321 verses in which the word appears in are found in the New Testament.
In the Old Testament the word "altar" is usually derived from the Hebrew mizbeach (Strong's Concordance #H4196) which simply references an altar. In the New Testament the English word comes from the Greek thusiasterion (Strong's #G2379) which means a place where sacrifices occur.
And Moses wrote all the words of the Lord, and rose up early in the morning, and builded an altar (mizbeach) under the hill, and twelve pillars, according to the twelve tribes of Israel (Exodus 24:4, KJV).
And I heard another out of the altar (thusiasterion) say, Even so, Lord God Almighty, true and righteous are thy judgments (Revelation 16:7, KJV).
The English word "die" appears 321 times in 299 King James translation verses. It is recorded the most in Ezekiel (34 times) followed by Numbers (30) and then Jeremiah (28). 48 out of the 321 times the word appears in Scripture are in the New Testament.
In the Old Testament the word "die" is usually derived from muth (Strong's #H4191) which means to kill, to have one executed, or to destroy someone. In the New Testament it is primarily derived from apothnesko (Strong's #G599) which refers to death or the dead.
The lips of the righteous feed many: but fools die (muth) for want of wisdom (Proverbs 10:21, KJV).
And whosoever liveth and believeth in me (Jesus Christ) shall never die (apothnesko). Believest thou this? (John 11:26, KJV).
Number 321 and the Nations
The English word "nations" occurs 336 times in 321 King James verses. It is written the most in Jeremiah (49 times) then Isaiah (41) then both Deuteronomy and Ezekiel (39 each). 37 out of the 321 verses in which the word appears in are in the New Testament.
The word "nations" is used, the majority of the time, to refer to groups of people that are not Israelites. It is a synonymous term to "Gentile" (or its plural) which appears 131 times in the KJV. These two words are used together to describe where the descendants of Japheth, one of Noah's three sons, migrated after the flood.
By these were the isles of the Gentiles divided in their lands; every one after his tongue, after their families, in their nations (Genesis 10:5, KJV).
More Info on Biblical Meaning of 321
There are no original language words, either in the Old or New Testaments, that occur 321 times.
321 is product of 3 x 107. Both 3 and 107 are prime numbers.
321 has subtle appearances in the King James Bible. The third chapter of Joel, as well as the third chapter of both Ephesians and Philippians, also have 21 verses (321).
Roman Emperor Constantine I, in 313 A.D., published the Edict of Milan. The edict, after 245+ years of repeated persecution of Christians by the Empire, finally officially ended such state-sponsored violence and intimidation. In 321 A.D. he issues another edict that, instead of forbidding work on the true Biblical Sabbath (Friday sunset to Saturday sunset), he legislates that work is forbidden, and rest should be pursued, on every "venerable" Sunday.