'Three day' in the Bible

"The elders of Israel will listen to you, and then you and they are to go to the king of Egypt and say to him, "The LORD God of the Hebrews has met with us. Now, let us take a three-day journey into the desert to sacrifice to the LORD our God.'

Then they said, "The God of the Hebrews has met with us. Please let us go a three-day journey into the desert to offer sacrifices to the LORD our God so he does not strike us with pestilence or sword."

We must go a three-day journey into the desert, and we'll offer sacrifices to the LORD our God just as he has told us."