'Right hand' in the Bible

So Bathsheba went to King Solomon to speak to him about Adonijah. The king stood up to greet her, bowed to her, sat down on his throne, and had a throne placed for the king’s mother. So she sat down at his right hand.

Then Micaiah said, “Therefore, hear the word of the Lord: I saw the Lord sitting on His throne, and the whole heavenly host was standing by Him at His right hand and at His left hand.