Where does it talk about giants in the Bible? 

Biblical references to giants appear frequently as both named individuals and entire people groups, indicating that extraordinary human size was a recognized feature of the ancient world. Although many supposed archaeological discoveries of giant remains have been exposed as fraudulent, literary testimony and rare cases of extreme human height suggest that unusually large individuals did exist and would have been perceived as formidable in antiquity. Comparisons between biblical measurements (especially those related to Goliath) and known historical examples show that the described heights fall within the upper range of human possibility. More importantly, the giant traditions serve a theological purpose: they illustrate the link between supernatural rebellion and human tyranny and frame the broader biblical theme of spiritual warfare. Minimizing or dismissing the reality of giants risks flattening the Bible’s supernatural worldview and obscuring the larger conflict between the forces of God and the powers of evil that runs throughout the biblical story.