Seniority; the state or condition of being older.(noun)
The position or office of being an elder.(noun)
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Use "eldership" in a sentence
" [In some editions of the Genevan version the word "eldership" is thus explained in the margin: "Under this name he containeth the whole ministerie of the church which was at Ephesus."]  Assertion of the Government of the Church of Scotland, 1641, pp. 128-130, 136-147."
""AgeSong's nationally recognized approach to building design and programming is reflected throughout the building and redefines the concept of" eldership "with architecture and landscaping that affirm the residents 'dignity and wisdom," said Massih."
"I am privileged to be thought of as a senior staffer at this point, and to provide some significant part of the eldership our organization honors."