And it came to pass, when he had come, that he blew a trumpet in the mountain of Ephraim, and the children of Israel went down with him from the mount, and he was before them.
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George Leo Haydock
Seirath seems to have been on the road from Galgal to Mount Ephraim. Some conjecture that Josephus speaks of it under the name of Syriad, (Calmet) where he saw the inscriptions, which he asserts were left by the children of Seth before the deluge. (Haydock)
They might perhaps be the idols which are mentioned here.