The Bible talks about giants being in the land. In Genesis 6:4, the Scripture tells us plainly that giants were in the land in those days. These were the days before the Flood in Noah's time that flooded the whole earth. Later in the Bible after the Flood, there was giants that David dealt with. The first encounter David had with giants was Goliath, who was a giant at 9 feet 6 inches in height (I Samuel 17:4). But I believe there was even bigger giants than him before the Flood.
Here is some reports of giants in the land that were discovered in North America and other places around the world :
In his book, 'The Natural and Aboriginal History of Tennessee, author John Haywood describes "very large" bones in stone graves found in Williamson County, Tennessee, in 1821. In White County, Tennessee, an "ancient fortification" contained skeletons of gigantic stature averaging at least 7 feet in length.
Within an ancient burial mound near the town of Sayre in Bradford County, Pennsylvania, skeletons measuring approximately 7 feet in length were discovered in the 1800's. But the most remarkable feature of these tall skeletons were not the height, but the strange horn-like protrusions above the brow region on their skulls. It was estimated that they were buried around 1200 AD. According to some sources, the skeletons were sent to the American Investigating Museum in Philadelphia and vanished.
In Lompoc-Rancho California, in 1833, soldiers discovered a skeleton 11' 9" long which was covered with boulders with an unidentified writing. A similar writing was unearthed on the Isle of Santa Monica, off the coast of Los Angeles.
In July of 1887, in Eureka, Nevada, a human leg bone was found measuring 38.9 inches from the knee to the heel. The man or woman would of been over 11 feet tall.
In Crittenton, Arizona, in 1891, a sarcophagus was uncovered containing a human 3 meters high and had 12 toes.
In the Caucasus Mountains in Russia, skeletons were found ranging from 2.8 meters to 3.12 meters in length.
In China skeletons 10 feet tall have been found. In the Philippines a giant human skeleton was found that measured 17 feet long.
In the Eagle Three Coal mine at Bar Creek, Montana in 1920, two human molars were found that were three times larger than normal human teeth.
In Braton, Tennessee, human footprints were found in solid rock 33 inches long and one foot wide. These footprints had six toes. The giants that David and his servants killed had six toes on each foot and six fingers on each hand (2 Samuel 21:20). In Morocco, tools were found that were so large that their users must of been at least 12 feet tall.
In Genesis 6:4 giants (nephilim) were produced . "There were giants in the earth in those days; and also after that, when the sons of God came in unto the daughters of men, and they bare children to them, they same became mighty men which were of old, men of renown".
The word "giants" is a translation of the Hebrew word nephal. It is used only three times in the Old Testament, once here in Genesis 6:4, and twice in Numbers 13:33 telling of the giants that the 12 spies of Israel encountered when they went into the borders of Canaan to determine what lay in front of them as they prepared for war on the western side of Jordan.
Gigantism is certainly not unknown in human history. We know in recent history, various giants have made notoriety in the "Guinness Book of Records". Robert Wadlow is listed as the tallest person for whom there is irrefutable medical evidence, at 8 feet 11.1 inches. He was called the "Alton Giant" because his hometown was Alton, Illinois. A female giant, Zeng Jinlian was 8 feet 1.75 inches tall. There is many professional basketball players whom are well over 7 feet tall. This demonstrates that "giants" are not miraculous. They are indeed, unusual in the human population, but are certainly not unheard of. What would be unusual would be giants with 6 toes on each foot and 6 fingers on each hand that they encountered in the Old Testament?
What makes the "giants" in Genesis more noteworthy than others throughout history? Perhaps it is the implication that they were the result of some selective breeding with the "sons of God" and the "daughters of men". Whoever reads this article. You can start a discussion about these "giants". Where do think these "giants" are now? How were they able to reproduce with the earthly women? The "sons of God" are angelic creatures (Job 1:6, 2:1, 38:7).