See thy way in the valley - The valley of Hinnom, where they offered their own children to Moloch, an idol of the Ammonites.
A swift dromedary traversing her ways - Dr. Blayney translates, "A fleet dromedary that hath taken to company with her." Dr. Dahler rather paraphrases, thus: -
Semblable a une dromedaire en chaleur,
Qui court d'une tote a l'autre.
"Like to a dromedary in her desire for the male,
Which runs hither and thither."
This is an energetic comparison; and shows the unbridled attachment of those bad people to idolatry, and the abominable practices by which it was usually accompanied.
In their defense of themselves (compare Jeremiah 2:35), the people probably appealed to the maintenance of the daily sacrifice, and the Mosaic ritual: and even more confidently perhaps to Josiah‘s splendid restoration of the temple, and to the suppression of the open worship of Baal. All such pleas availed little as long as the rites of Moloch were still privately practiced.
Thy way in the valley - i. e., of Hinnom (see 2 Kings 23:10 note). From the time of Ahaz it had been the seat of the worship of Moloch, and the prophet more than once identifies Moloch with Baal. “Way” is put metaphorically for “conduct, doings.”
Traversing - Interlacing her ways. The word describes the tangled mazes of the dromedary‘s course, as she runs here and there in the heat of her passion.