all 'ufos' are terrestrial in origin. not that they don't exist, but they don't come from outside of earth's atmosphere
Gen. 6:1 Now it came about, when men began to multiply on the face of the land, and daughters were born to them,
Gen. 6:2 that the sons of God saw that the daughters of men were beautiful; and they took wives for themselves, whomever they chose.
Gen. 6:4 The Nephilim were 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. Those were the mighty men who were of old, men of renown.
Gen. 3:15 And I will put enmity
Between you and the woman,
And between your seed and her seed;
He shall bruise you on the head,
And you shall bruise him on the heel.”