Where Does the Phrase Offing Come from?

In the near or immediate future; soon to come. For example, Jan was delighted that exams were finished and graduation was in the offing. This expression originally meant “in the part of the ocean visible between shore and horizon”; its figurative use dates from the late 1700s.

What is the meaning of the phrase in the offing?

: likely to happen soon A promotion might be in the offing for him.

Does offing mean kill?

verb To kill someone, especially as a means of silencing or disposing of them. In this usage, the term is usually followed by a noun or pronoun.