It was through angels that God appeared to Moses and Moses addressed those angels as Jehovah, and on other occasions too angels were were addressed as Jehovah. In fact, the name Israel means to wrestle with God although Jacob only wrestled with Jehovah’s angel.( “So Jacob named the place Pe·niʹel, for he said, ‘I have seen God face-to-face..’”) Jacob did not actually see God and neither did doubting Thomas.
Having all authority, Jesus is God by power of attorney or proxy.