The fourth time the word Sheol is used in the old testament is in Genesis 44:31.
"...it will happen when he sees that the youth is not [with us], he will die, and your servants will bring the gray hair of your servant, our father, in sorrow, to Sheol."
In Genesis 44:29, a few passages earlier, Jacob was directly quoted by Judah, who is speaking to his brother Joseph in Egypt. Here in this passage, Judah emphasizes again the consequences of Joseph keeping Benjamin, their youngest brother, in Egypt.
Again, Sheol, in this passage, is referring to the grave, just like it had in the previous 3 verses.