Brothers, let me put this in human terms. Even a human covenant, once it is ratified, cannot be canceled or amended.
Berean Standard Bible (BSB)
Brothers, speaking of human terms, though it is only a man’s covenant, yet when it has been confirmed, no one makes it void, or adds to it.
World English Bible (WEB)
Brethren{G80}, I speak{G3004}{(G5719)} after the manner of{G2596} men{G444}; Though it be but{G3676} a man's{G444} covenant{G1242}, yet if it be confirmed{G2964}{(G5772)}, no man{G3762} disannulleth{G114}{(G5719)}, or{G2228} addeth thereto{G1928}{(G5736)}.
Strong's King James
(15) Brothers, I speak in accordance to mankind, as when a man's covenant (will) is confirmed, nobody rejects or adds conditions to it.
The F.O.G
The F.O.G Message
Brethren, as a man I say it, even of man a confirmed covenant no one doth make void or doth add to,
Young's Literal Translation
