26 Then God said, “Let us make mankind in our image, in our likeness . . . . "Genesis 1.26 NIV
Blogger Paul Sumner has a studied opinion on this use of the plural. I quote from
his website hebrew-streams.org.
"Historically, most Jewish commentators have said the Creator is here speaking to the angels of the heavenly assembly, his divine court. Most Christian interpreters have said the texts allude to interaction within the Triune Godhead.
"In the last century, there has been a marked opinion shift among Christian commentators toward the traditional Jewish interpretation. The reason for this shift has not been due to ecumenical feelings but to a different approach in reading the Hebrew Bible ("Old Testament" in Christian terms).
"Most commentators now believe the Bible should be interpreted on its own terms, without imposing later theological beliefs or agendas, either Jewish or Christian.
"In other words, these verses in Genesis (and passages like Isaiah 41:21-23 ...) need be viewed in light of their own contexts without biased interpretation. The desire is to understand what Moses or Isaiah, Jeremiah or the Chronicler understood by what they themselves wrote, in their own times.
"This doesn't mean the original meanings cannot have implications beyond their contexts. Later biblical writers often appropriate and extend earlier texts to their own time or into the future. But, in my view, those 'implications' should not contradict or turn the original words upsidedown."