Jesus stated that the period before His return would mirror the conditions during the life of Noah. During that era, the Bible records that fallen angels took human form and cohabited with women. These beings are referred to as "sons of God" in the Hebrew text. This union produced a hybrid race known as giants or (Nephilim) נְפִילִים — "fallen ones".

“There were giants on the earth in those days, and also afterward, when the sons of God came in to the daughters of men and they bore children to them.” Genesis 6:4

This corruption of the human race was a primary reason for the universal flood. God preserved Noah and his family because they represented a pure human lineage. After the flood, another eruption of these hybrid beings occurred, which explains the presence of individuals like Goliath. God raised up leaders like David to remove these non-human threats from the earth.

Today, people report "unidentified flying objects" or alien beings. These are not visitors from other galaxies, but fallen angels attempting to deceive humanity. This deception aims to provide a secular explanation for the future disappearance of Christians during the Rapture.

Evil often disguises its ancient history as "new" technology to make deception feel like progress.