en_tn/isa/48/14.md

Yahweh continues speaking to the people of Israel.

Who among you has announced these things?

Yahweh uses a question to emphasize that the idols have not told them these things. (See: rc://en/ta/man/translate/figs-rquestion)

Yahweh's ally will accomplish his purpose against Babylon. He will carry out Yahweh's will against the Chaldeans.

Both of these clauses mean the same thing and are used for emphasis. Here "ally" refers to Cyrus, the king of Persia. (See: rc://en/ta/man/translate/figs-parallelism)

I, I

The word "I" is repeated for emphasis.