Acts 7:6 And God spake on this wise, That his seed should sojourn in a strange land; and that they should bring them into bondage, and entreat them evil 400 years.
the following years, are before those 400 years
Genesis 41:1 1 And it came to pass at the end of 2 full years
46 And Joseph was 30 years old when he stood before Pharaoh king of Egypt. And Joseph went out from the presence of Pharaoh, and went throughout all the land of Egypt.
50 And unto Joseph were born two sons before the years of famine came, which Asenath the daughter of Potipherah priest of On bare unto him.
53 And the 7 years of plenteousness, that was in the land of Egypt, were ended.
54 And the 7 years of dearth began to come, according as Joseph had said: and the dearth was in all lands; but in all the land of Egypt there was bread.
45:6 For these two years hath the famine been in the land: and yet there are 5 years, in the which there shall neither be earing nor harvest.
47:7 And Joseph brought in Jacob his father, and set him before Pharaoh: and Jacob blessed Pharaoh.
8 And Pharaoh said unto Jacob, How old art thou?
9 And Jacob said unto Pharaoh, The days of the years of my pilgrimage are 130 years
28 And Jacob lived in the land of Egypt 17 years: so the whole age of Jacob was 147 years.
50:26 So Joseph died, being 110 years old: and they embalmed him, and he was put in a coffin in Egypt.
Stephen, said to the high priest and to the hebrew people
7:15 So Jacob went down into Egypt, and died, he, and our fathers,
Those fathers included the children of Joseph, and before the beginning of the 400 years, the children of Israel grew so much:
7:17 But when the time of the promise drew nigh, which God had sworn to Abraham, the people grew and multiplied in Egypt,
and grew, and grew, and grew for many centuries, TILL
7:18 Till another king arose, which knew not Joseph.
So, that king actioned in order to stop the GROWING OF THE CHILDREN OF ISRAEL, the masoret recorded
Exodus 1:9 And he said unto his people, Behold, the people of the children of Israel are more '...than we:
the children of Israel GREW SO MUCH THAT WERE MORE THAN THE EGYPTIANS!
that big multiplication of millions of persons COULD NOT BE IN 30 YEARS, as it was recorded by the perVERSIONS of the OLD TESTAMENT
EXODUS 12:40 Now the sojourning of the children of Israel, who dwelt in Egypt, was 400+30 years.
41 And it came to pass at the end of the 400+30 years, even the selfsame day it came to pass, that all the hosts of the LORD went out from the land of Egypt.
All of these prove that Stephen DID NOT use the Old Testament at all, but the mind controlled have closed their eyes and ears,41 And it came to pass at the end of the 400+30 years, even the selfsame day it came to pass, that all the hosts of the LORD went out from the land of Egypt.