The Great Pyramid of Gizeh (one of the oldest of the Seven Wonders of the Ancient World) had special meaning to Charles Taze Russell and the Bible students in 19th century.
They attempted to corroborate Biblical time periods with the Great Pyramid for two reasons:
1. What was stated in Isaiah 19:19.
In that day there will prove to be an altar to Jehovah in the midst of the land of Egypt, and a pillar to Jehovah beside its boundary. Isaiah 19:19
2. Who built the Great Pyramid?
One of the enigmas about the Great Pyramid is who built it. It's been stated that the design, construction and astronomical calculations found on the Great Pyramid determine that it was virtually impossible for the Egyptians to have designed it. Simply put, the knowledge displayed in the Great Pyramid was too advanced for humans of that time.
Thus, this means that if the Egyptians built the Great Pyramid they had to get the design from some superhuman source. Using the Bible as a model, we see that Jehovah in the Hebrew scriptures gave mankind structures to build. For example, the Israelites received specifications to build the tabernacle (Ex. 25:40), Solomon's and Zerruabbel's Temple (I Chron. 28:18-19). The Israelites were not the first people that God instructed to build something. Noah was given instructions to build the ark (Gen. 6:13-16, 22). When Israel came across the River Jordan into the Promised Land, Joshua the Son of Nun made Israel erect two sets of 12 stones as a sign that the Ark of the Covenant divided the river (Jos. 4th chp). The Bible shows that God always gave man designs for the structures he wanted them to build and it was always man that built them to his specification.
The mystery of the origin and construction of Great Pyramid(s) has been the subject of investigation since it's discovery up to its most recent observations.
Great Pyramid Mystery to Be Solved by Hidden Room?
for National Geographic News November 14, 2008 A sealed space in Egypt's Great Pyramid may help solve a centuries-old mystery: How did the ancient Egyptians move two million 2.5-ton blocks to build the ancient wonder?
In spite of the alleged observations, there are no realistic prophecies that can be derived from the architecture, design or astronomical calculations found in Pyramid of Gizeh. The early Bible students simply made an attempt to corroborate Biblical time periods with what they perceived to be “God's stone witness.”
The International Bible Students, best known as Millennial Dawners early in the 20th century, had been proclaiming to the world that the day of wrath prophesied in the Bible would dawn in 1914.
From the inception of Jehovah's Organization, the proclamation of Christ's Millennial Reign beginning in 1914 CE has always been taught to begin after the Gentiles Times as foretold in God's Word. The 2,520 years from 607 BCE.
Thy Kingdom Come 1898 Edition
And the parallelism continues to the full end of the harvest of this dispensation-until the overthrow of the professedly Christian kingdoms, really "kingdoms of this world," and the full establishment of the Kingdom of God in the earth at A.D. 1914, the terminus of the Times of the Gentiles. (See Vol. I I., chap. iv.) Page 126, Thy Kingdom Come 1898 Edition
The attempts to corroborate Biblical time periods with the Great Pyramid are summarized as follows:
For simplicity we will take our erroneous A.D. as the standard, and will scale down the Pyramid figures to correspond, by deducting one and one-fourth inches from them, so that they will correspond with our common reckoning. Thus reduced, they would show (a) 1875 less 1 1/4 equal 1873 3/4; (b) 1882 less 1 1/4 equal 1880 3/4; and (c) 1911 less 1 1/4 equal 1909 3/4, and give the dates (a) October, 1874, (b) October, 1881 and (c) October, 1910, A. D. How long this sifting of the consecrated will last, during which some will be granted the crowns of those adjudged unworthy, and their names written instead of some whose names will be blotted out (Rev. 3:5, 11), the Scriptures do not, so far as we have yet seen, indicate; but this date, 1910, indicated by the Pyramid, seems to harmonize well with the dates furnished by the Bible. Page 363 Thy Kingdom Come 1898 Edition The four years from 1910 to the end of 1914, indicated thus in the Great Pyramid, will be quite sufficient for the extreme of all that trouble; for when it reaches its terrible climax it cannot last long ; and "Except those days should be shortened there should no flesh be saved."-Matt. 24:22 Page 364 Thy Kingdom Come 1898 Edition
Upon a thorough examination of "Pyramidology" as immaterial to any aspect of God's Word, (the term used, sometimes disparagingly, to refer to various pseudoscientific speculations regarding pyramids, most often the Giza Necropolis and the Great Pyramid of Giza in Egypt) Jehovah’s Witnesses have abandoned the idea that an Egyptian pyramid has anything to do with true worship.
The administrative position of Jehovah's Organization has never whitewashed mistaken viewpoints. The evidence has clearly been referenced for critics or newly interested ones for research purposes.
jv chap. 14 pp. 200-201 “They Are No Part of the World” Practices That Have Been Abandoned This Christmas celebration at Brooklyn Bethel in 1926 was their last. The Bible Students gradually came to appreciate that neither the origin of this holiday nor the practices associated with it honored God For years, Bible Students wore a cross and crown as a badge of identification, and this symbol was on the front cover of the “Watch Tower” from 1891 to 1931. But in 1928 it was emphasized that not a decorative symbol but one’s activity as a witness showed he was a Christian. In 1936 it was pointed out that the evidence indicates that Christ died on a stake, not a two-beamed cross. In their “Daily Manna” book, Bible Students kept a list of birthdays. But after they quit celebrating Christmas and when they realized that birthday celebrations were giving undue honor to creatures (one reason that early Christians never celebrated birthdays), the Bible Students quit this practice too. For some 35 years, Pastor Russell thought that the Great Pyramid of Gizeh was God’s stone witness, corroborating Biblical time periods. (Isa. 19:19) But Jehovah’s Witnesses have abandoned the idea that an Egyptian pyramid has anything to do with true worship. (See “Watchtower” issues of November 15 and December 1, 1928).
Some brief excerpts:
When the Christian finds that he has been following a wrong interpretation and sees a more reasonable and harmonious explanation thereof, he will readily and gladly forsake the old and turn to the later and better understanding. God reveals his truth in a progressive way. (Prov. 4:18) In no other way could the Christian walk in the light. He is admonished to be ready to give a reason for his hope. (1 Pet. 3:15) That reason must be based upon the Word of God, and not upon science and philosophy so called. -Isa. 1:18; 1 Tim. 6:20; 2 Tim. 1:12, 13; Col. 2: 8. In the land of Egypt, in the northern part of the continent of Africa, there is set up a great structure of stone which is called the great pyramid of Gizeh. For the past half-century many students of the Word of God have been taught and have believed that the great pyramid of Egypt is that which God through his prophet Isaiah refers to in the text first above quoted. Many have relied upon that structure of stone to corroborate the testimony concerning the divine plan which is set forth in the Word of God. In fact, some have designated the pyramid "the Bible in stone" and "God’s stone witness." Some by reference to that structure of stone have made calculations and determined in their own minds just the time when God would bring his plan to a climax. By certain measurements and mathematical calculations they have attempted to decide just the exact time God would take all his children from earth and receive them into heaven. Those relying thereupon have suffered sorrow and disappointment. When the important event expected to come to pass on a day certain failed to materialize, the devotees of the pyramid have sought out measurements therein by which they have fixed other and later dates and pinned their faith to such testimony.