Taking 'He slipped the knife out of the sheath and was ready, and unembarrassed by hampering bedclothes, for the weather was hot and we hadn't any.' as a given, does it logically imply 'He was about to murder someone.'
He slipped the knife out of the sheath and was ready, and unembarrassed by hampering bedclothes, for the weather was hot and we hadn't any.###He was about to murder someone.