This lets us know, that Christ was not in Judea when he received the tidings of Lazarus's sickness, but in Peraea, or Galilee; but he presently upon it takes up thoughts of returning again into that province, and indeed he was now preparing for his last journey thither: however, the sickness of Lazarus, and his raising from the dead, was one occasion of his so soon going up; from which his disciples would have discouraged him, as followeth...(see 1 Thessalonians 11:8).
Related Commentaries of John 11:7
John 11:7
7 Then after that saith he to his disciples,Let us go into Judaea again.