Ehud then approached him while he was sitting alone in the upper room of his palace and said, "I have a message from God for you." As the king rose from his seat (NIV)
When Ehud had come [near] to him as he was sitting alone in his cool upper apartment, Ehud said, I have a commission from God to execute to you. And the king arose from his seat. (AMP)
And Ehud came unto him; and he was sitting in a summer parlour, which he had for himself alone. And Ehud said, I have a message from God unto thee. And he arose out of his seat. (KJV)