The Meaning of Numbers: The Number 28
The number 28 derives part of its meaning from the fact that it is the product of 7 (a Biblically perfect numeral) and 4.
There are 28 writers of the Old Testament (Amos, Daniel, David, Davidic priests, Esther, Ezekiel, Ezra, Habakkuk, Haggai, Hezekiah, Hosea, Isaiah, Jeremiah, Job, Joel, Jonah, Joshua, Malachi, Micah, Mordecai, Moses, Nahum, Nehemiah, Obadiah, Ruth, Samuel, Solomon, Zechariah, Zephaniah).
The phrase "the Lamb," used to refer to Jesus Christ as the Lamb that takes away the sins of the world, occurs twenty-eight times in Scripture. The word "Hallelujah" also appears twenty-eight times.
Of the top ten occurring names in the entirety of God's word, the name David appears in twenty-eight Books.
The book of Mark has 28 direct Old Testament quotations. The book of Acts, with its twenty-eight chapters, is the longest book in the New Testament.
Appearances of the number twenty-eight
A set of ten curtains God commanded to be made for his wilderness tabernacle had to be made of the finest twined linen (Exodus 26:1). Each curtain in this set had to be 28 cubits long and 4 cubits wide. If we assume the cubit used was a conservative 18 inches (45.7 centimeters), this meant each curtain was 42 feet (12.8 meters) long and 6 feet (1.8 meters) wide (Exodus 26:2, 36:9)!
The bloody number 28
King Jehu, a mostly bad king who ruled over the Kingdom of Israel, governed for 28 years (841 to 814 B.C., see 2Kings 10:36).
He is unique among the kings of Israel and Judah, as his reign began in the bloodiest way possible. He was commissioned by God, through Elisha, to destroy all those of the household of evil King Ahab. In fulfillment of Elijah's prophecy, Jehu had all of Ahab's seventy sons killed and their heads stacked in two piles at Jezreel's gate (2Kings 10:1 - 11). He also killed in Jezreel all the leaders, pagan priests, and kinsfolks that were connected to Ahab.
He had evil Jezebel, the wife of King Ahab, thrown out of a tower window and killed. In fulfillment of another of Elijah's prophecies, her dead body was then torn to pieces by dogs where only her skull, feet and the palms of her hands remained (2Kings 9:30 - 37).
Jehu, in the same year he took care of Ahab and his household, also slew his predecessor King Joram of Israel (a son of Ahab and Jezebel) and Ahaziah, king over Judah (2Kings 9:24, 27 - 28).
Additional info on the Biblical Meaning of 28
King Rehoboam, the son of Solomon, was the first ruler of the Kingdom of Judah when it separated from the Kingdom of Israel (the northern ten tribes). Taking on the same lifestyle as his father, he had eighteen wives and sixty concubines (2Chronicles 11:21). These women produce twenty-eight sons for him and sixty daughters. God expressed forbid any human king over his people from multiplying wives to himself (Deuteronomy 17:17).
Among those in Babylonian captivity that went with Ezra the prophet to Jerusalem were the sons of Bebai. They numbered 28 men (Ezra 8:11).