'Meaning' in the Bible

Then some of his disciples said to one another, "What is the meaning of what he is saying, 'In a little while you will not see me; again after a little while, you will see me,' and, 'because I am going to the Father'?"

So they kept on repeating, "What is the meaning of what he says, 'In a little while'? We do not understand what he is talking about."