The invasion started not long after the daughters of man were born, they were good looking and the angelic ones left their positions and came to look at them on the earth. They desired them greatly and took them and had offspring with them.
There is only a small account of this in Genesis 6v1-5. We also have other references to them apart from Jude, for instance when the 12 spies were sent into the land they came back with tales of these giant men. Numbers 13v25-33 says “the land through which we have gone, to spy it out, is a land that devours its inhabitants, and all the people we saw in it were men of great stature. And there we saw the Nephelim (the sons of Anak who came from the Nephelim) and we seemed to ourselves like grasshoppers”.
But the two spies came back with a glowing report about the land bringing wonderful produce to show the people.
This shows that knowledge of these angelic half-breeds were known to the people for many hundreds of years after the flood and their destruction.
As for the flood waters themselves, it had to cover the whole of the earth completely for it to work and it must have been very hard for the angels to watch their offspring dying in the flood waters and not be able to help them.
Genesis 6v6-19 shows how our God felt sorry that he had even made man on the earth (6v6) and the earth was completely corrupt in his eyes (v11) he now determines to end all flesh because the earth is full of violence (v13) but Noah has found favour with him and he instructs him to build an ark so that he would be saved from the floodwaters. He tells Noah, “I will bring a flood of waters upon the earth, to destroy all flesh in which is the breath of life from under heaven, everything that is on the earth shall die. But I will establish my covenant with you and you shall come into the ark, you, your sons, your wife, and your sons wives with you”. This statement also expels many “myths” about Noah preaching about the coming flood in which some may get saved because the covenant from God was only for the family of Noah and no one else so Noah certainly would not have preached a salvation to any one else, only 8 souls were to be saved. This also shows the flood waters will cover the earth completely and only those inside the ark will survive. The construction of the ark was to be just a wooden crate which would float on the water with a door on its side, and was not designed to sail through the waters like a giant ship of boat. It finally came to rest upon the mountains of Ararat.
It may be of interest to note, Noah’s father Lamech died five years before the flood and Methuselah, the oldest man, died the same year as the flood.
Not only did these angelic ones invade the earth in the beginning but they stayed here making their home in the expanse, the earth’s heavens from where they stayed close to their half bred sons. They also became the angelic gentile princely rulers over the earth as Daniel shows us in his book.
Daniel 10v13-15, 20-21, shows how these princes stopped access to the earth when Daniel was being visited. They have dominated the earths affairs ever since. Daniel chapter 2 shows that when Gods kingdom is being set up all these kingdoms will be destroyed all together in one full sweep. 2v44 shows “and in the days of those kings the God of heaven will set up a kingdom which shall never be destroyed. them It shall break in pieces all these kingdoms and bring them to an end”. They will not allow our Lord Jesus to place his kingdom over the earth so we have been told, they will all gather together against him at the place called Armageddon. (Rev 16v16) This will be their day of judgement. 2nd Peter 2v4-6, and chapter 3v6,7 shows the heavens and the earth that now exists have been stored up for fire being kept until the day of judgement and destruction of ungodly men.
Daniel chapters 11 and 12 also speaks of this great conflict, that will be fought in the earths heavens and as this involves the princely rulers over the earth we are bound to be affected by their warfare. We have never experience peace on the earth from their kingdoms but under the kingdom of God through our Lord Jesus we are promised “a new heavens and a new earth we are waiting for”. The new heavens, a new ruling kingdom under our lord Jesus and this in turn will produce a new earth where righteousness will dwell. (2nd Peter 3v13)
The invasion took place about six thousand years ago now by these rebels, the angelic ones, and we are told that our Lord Jesus is “the lord of the Sabbath” ( Matthew 12v8) the Sabbath being the 7th day and in Peter 3v8-13 tells us “that one day with God as a thousand years” so if 6 thousand years have passed we are due for the Sabbath day to take effect over the earth.
Let your kingdom Come and cover the earth in righteousness.