kleis denotes a means of opening, shutting, or controlling entry, whether linked to knowledge, a kingdom, death, or an abyss.

Across the supplied verses, the term denotes a means associated with access and control: it is connected with entering or preventing entry, with opening and shutting, and with access to knowledge, the kingdom of heaven, death and Hades, and the abyss.

1. Means of access, opening, and closure · dominant

   In Luke 11:52, the singular accusative form stands in the clause about taking it up while others are prevented from entering; the APB renders “the key of knowledge.” In Matthew 16:19, Revelation 1:18, Revelation 20:1, Revelation 3:7, and Revelation 9:1, the forms occur with the kingdom of heaven, death and Hades, the abyss, and David; Revelation 3:7 explicitly pairs possession with opening and shutting, while Revelation 9:1 says that it “was given” to the fallen star.

   Luke 11:52Matthew 16:19Revelation 1:18Revelation 20:1Revelation 3:7Revelation 9:1

In the Anselm Project Bible: The APB consistently uses “key” or “keys” in these verses, attaching them to knowledge, the kingdom of heaven, death and Hades, the abyss, and David. These renderings confirm the clauses' overall presentation rather than establish a separate English sense.