en_tn_condensed/isa/48/16.md

General Information:

Yahweh continues speaking to the people of Israel.

I have not spoken in secret

This can be expressed positively. Alternate translation: "I have spoken plainly and clearly" (See: rc://en/ta/man/translate/figs-doublenegatives)

sent me

Here "me" refers to an unknown servant of Yahweh, maybe Isaiah or Cyrus or the promised Messiah.