This verse doesn’t imply there is more than one God. Aside from the suggestion that this refers to the three persons of the Trinity: the Father, the Son, and the Holy Spirit, it is also possible to give the interpretation that this is a reflection of the conceptual image the Jews had of God. For them he was multi-faceted and did not have only one side to his character as did the other gods around them. This was why he was called Elohim, which is the plural for the singular El (God), and this may be an ancient remnant, or a particular place of expression, where God’s action/nature as non-singular was emphasized.
Genesis 1:26 Then God said, “Let us make man in our image, in our likeness..”
