The Nephilim
In Genesis 6:4, it says: "The Nephilim were on the earth in those days—and also afterward—when the sons of God went to the daughters of humans and had children by them. They were the heroes of old, men of renown." "The sons of God" are often interpreted as fallen angels. This is supported by Job 1:6, where "sons of God" refers to angels: "Now there was a day when the sons of God came to present themselves before the Lord, and Satan also came among them." If the above is true, then angels have the ability to produce sperms to impregnate women. In Mark 12:25 , it says "For when they rise from the dead, they neither marry nor are given in marriage, but are like angels in heaven." This strongly indicates that they cannot reproduce. Other theories said the Nephilim are powerful kings and nobles. For example, the tallest king every recorded in the scripture was King Og of Bashan. He was the last of Rephaim, a group of giants. In De...