Ephraim has allowed himself to get mixed up with the nations.
Ephraim is unturned bread baked on a griddle.

They will not pour out
their wine offerings to the Lord,
and their sacrifices will not please Him.
Their food will be like the bread of mourners;
all who eat it become defiled.
For their bread will be for their appetites alone;
it will not enter the house of the Lord.

Ephraim’s glory will fly away like a bird:
no birth, no gestation, no conception.

The Lord brought Israel from Egypt by a prophet,
and Israel was tended by a prophet.

When they had pasture,
they became satisfied;
they were satisfied,
and their hearts became proud.
Therefore they forgot Me.