But the devil said, don't worry about that flood, build some pyramids to keep you safe. The pyramid part is my own speculation, thats not in the bible.
Yes, that speculation...and a very uneducated speculation at that.
People have burying the dead, for at least 100,000 years (Middle Palaeolithic).
The first pyramid was built for the 1st king (Djoser, reign 2686 - 2667 BCE) of the 3rd dynasty, at Saqqara, known as the Step Pyramid.
This earliest pyramid predated the great pyramid of Giza of the 2nd king of the 4th dynasty, Khufu, reign 2589 - 2566 BCE, by over a century.
The Step Pyramid predated the estimated date of the Genesis Flood (based on the translations of Masoretic Text), of 2340 BCE, by over 2 centuries.
According to Jewish traditions, no one but god knew when the Flood would occur, meaning no angels (therefore Satan didn't know too) knew this would happened until god revealed his plan to Noah.
Archaeologically and historically, there have been many floods in ancient Egypt, but none of them show evidences that Genesis extinction-level event occurred in Egypt, because they have been building pyramids before and after 2340 BCE.
Had there been Flood of Genesis' magnitude, the kings would have stopped building these pyramids for some period of time, because there wouldn't be enough manpower to build pyramids, since most people would have been dead after the Flood. And there are no evidences of Egyptians stop building pyramids for their kings throughout the Old Kingdom period 2686 - 2181 BCE.
2340 BCE would have set the Flood in the reign of the 1st king of the 6th dynasty, Teti (reign 2345 - 2333 BCE). If the Flood had happened, then Teti and his children would be dead, and Teti wouldn't have a successor, his son Pepi I (2331 - 2287 BCE), who also has his own pyramid.
Before the 3rd dynasty, kings were buried in tumulus. And mummification predated pyramid-building by almost 1000 years, around 3500 BCE. During this time (c 3500 BCE), Egypt was divided into two kingdoms, north (Lower Egypt, region in Delta Nile) and south (Upper Egypt, which is everything south of the Delta), known as the Predynastic period (4000 - 3050 BCE ). Egyptian culture even exist back then, for they still worshippped a number of gods that were better known when the 2 kingdoms were united into one ( c 3050 BCE).
Before Narmer (or Menes), the 1st king of the 1st dynasty, the northern and southern kingdoms have two distinctive crowns for two different kings. But when Narmer united all of Egypt, he also combined two crowns as one, which they continued to wear in the 1st millennium BCE. These 3 different crowns are shown in many art works, are evidences of the longevity of Egyptian culture. Arts may changed their styles, but in Egypt, the prehistoric styles persisted into the Bronze Age.
Another of Egyptian culture is their writing systems. The hieroglyphs and hieratic existed in Egypt as early 3100 BCE. And hieroglyphs continued to be used in temples and tombs as late as the Roman period 1st century CE.
Had Flood occurred as they say, would the new people, descendants of Ham (Mizraim or Egypt from Genesis 10) would have different style of writing. In Egypt). And according to Genesis 10, Egypt didn't exist until after Ham's son - Mizraim or Egypt- became a man and colonise he land we called Egypt.
Well, Egypt did exist and predated everything about the bible.
In the 3rd millennium BCE, writing in the Levant (like Canaan) didn't exist, possibly because they were illiterate. When writing existed in 2nd millennium BCE in Canaan, they were more similar to Akkadian-Old Babylonian cuneiform, which are different from Egyptian hieroglyphs.
Ugaritic cuneiform didn't exist until 15th century BCE. Phoenician alphabet in 12th century BCE. Paleo-Hebrew around 10th century BCE.
So if Moses did exist in the 13th century BCE, what writing did he used?
He couldn't use Hebrew alphabet, because the earliest inscription were Paleo-Hebrew 10th century BCE and onwards. And since there are no literary evidences existing before the Iron Age, a lot of Genesis and Exodus historicity are dubious and questionable.
You know of nothing about history in Egypt and Canaan during the Bronze Age (c 3100 - c 1000 BCE). All you have is your belief and faith in the bible, and just personal speculation.
The OT bible only contained very little of verifiable history, mostly in some parts of 1 & 2 Kings and that was written 6th century BCE. Nothing in Genesis and Exodus are verifiable. Most of what it say are either (A) purely mythological, or (B) inaccurate, or (C) wrong, or (D) all of the above.
I don't think you know anything about Egypt, anymore than james bond know about history. You should stop speculating and do some research on Egypt, before you make another comment on things you don't know.