הוֹי hoy Exclamation often used by prophets to introduce criticism of particular people. The accused, their activities and their attitudes are identified by participles and nouns. The only use of hoy outside the prophets is at 1 Kgs 13:30 in the context of mourning, it is clearly related to the exclamation ho.
Hoy appears twice in Amos (5:18; 6:1).
Wolff (242-245) provides
a clear incisive summary of discussion about the use of this exclamation
in the prophets and in the life of Ancient Israel, which illustrates
form critical investigation at its best.