A seeming contradiction is always good to chase down. An atheist will use it to say the Bible is a hoax. Every Biblical truth can be confused and needs through research led by the Holy Spirit.
And he said unto Abram, Know of a surety that thy seed shall be a stranger in a land that is not theirs, and shall serve them; and they shall afflict them four hundred years;
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 four hundred years.
The above verses talk about 400 years.
And it came to pass at the end of the four hundred and thirty years, even the selfsame day it came to pass, that all the hosts of the LORD went out from the land of Egypt.
Now then we have another verse talks about 430 years. So what is the answer?
Upon carefully looking at the verses it becomes easy to see the answer.
- They were in the land 430 years.
- They were evil entreated 400 years.
Now there arose up a new king over Egypt, which knew not Joseph.
Till another king arose, which knew not Joseph.
The seeming contradiction is actually there to tell us how long it took until Joseph was not known.
What authorities know you? How do they know you? What authorities do not know you? Why not?