'Self same' in the Bible

And ye shall observe the [feast of] unleavened bread, for in this selfsame day I have brought your armies out of the land of Egypt. Therefore ye shall observe this day throughout your generations by an ordinance forever.

And it came to pass at the end of four hundred and thirty years, even the selfsame day it came to pass, that all the armies of LORD went out from the land of Egypt.

And it came to pass the selfsame day, that LORD brought the sons of Israel out of the land of Egypt by their armies.