Jacob's well was there. Jesus therefore, being tired from his journey, sat down by the well. It was about the sixth hour{noon}.
Jesus, being wearied with his journey ...  The perfect humanity of Jesus is very evident in John.  He alone recorded the saying from the cross, "I thirst!" and it appears that the apostle was particularly impressed with the bone-tired weariness of Jesus as he sat wearily by the well when the apostles departed to buy provisions.  It would appear that the Lord's unusual weariness might have resulted from the fervor and enthusiasm with which the preaching and baptizing had been accomplished in the preceding days.  It was the kind of letdown that every great campaigner feels when the effort is over; and the long march up from Judaea had intensified his weariness.