Genesis 31:47

Both names signify the same thing, a heap of witness; only Laban gives the name in the Syrian language; but Jacob, though he had been long conversant in Syria, and understood that language, yet he chose to give it in Hebrew, which was both a secret renouncing of the Syrian manners and religion, together with their language, and an implicit profession of his conjunction with the Hebrews, as in their tongue, so in their religion.