Staff of Solomon kills, seals and touches intangible demon

Kane felt the cold fingers of fear claw at his brain, but he braced himself, and lifting the ancient staff, struck with all his power into the centre of the Horror. And he felt an unnameable, immaterial substance meet and give way before the falling staff. Then he was almost strangled by the nauseous burst of unholy stench that flooded the air, and somewhere down the dim vistas of his soul's consciousness re-echoed unbearably a hideous formless cataclysm that he knew was the death-screaming of the monster. For it was down and dying at his feet, its crimson paling in slow surges like the rise and receding of red waves on some foul coast. And as it paled, the soundless screaming dwindled away into cosmic distances as though it faded into some sphere apart and aloof beyond human ken.

Kane, dazed and incredulous, looked down on a shapeless, colourless, all but invisible mass at his feet which he knew was the corpse of the Horror, dashed back into the black realms from whence it had come, by a single blow of the staff of Solomon. Aye, the same staff, Kane knew, that in the hands of a mighty King and magician had ages ago driven the monster into that strange prison, to bide until ignorant hands loosed it again upon the world.

....

And Solomon Kane shuddered, for he had looked on Life that was not Life as he knew it, and had dealt and witnessed Death that was not Death as he knew it. Again the realization swept over him—as it had in the dust-haunted halls of Atlantean Negari, as it had in the abhorrent Hills of the Dead, as it had in Akaana—that human life was but one of a myriad forms of existence, that worlds existed within worlds, and that there was more than one plane of existence. The planet men call the earth spun on through the untold ages, Kane realized, and as it spun it spawned Life, and living things which wriggled about it as maggots are spawned in rot and corruption. Man was the dominant maggot now; why should he in his pride suppose that he and his adjuncts were the first maggots—or the last to rule a planet quick with unguessed life. He shook his head, gazing in new wonder at the ancient gift of N'Longa, seeing in it at last not merely a tool of black magic, but a sword of good and light against the powers of inhuman evil forever. And he was shaken with a strange reverence for it that was almost fear. Then he bent to the Thing at his feet, shuddering to feel its strange mass slip through his fingers like wisps of heavy fog. He thrust the staff beneath it and somehow lifted and levered the mass back into the mausoleum and shut the door.

-The Footfalls within