Berean Standard Bible (BSB)
I am not making a demand, but I am testing the sincerity of your love in comparison to the earnestness of others.
World English Bible (WEB)
I speak not by way of commandment, but as proving through the earnestness of others the sincerity also of your love.
Strong's King James
I speak{G3004}{(G5719)} not{G3756} by{G2596} commandment{G2003}, but{G235} by occasion{G1223} of the forwardness{G4710} of others{G2087}, and{G2532} to prove{G1381}{(G5723)} the sincerity{G1103} of your{G5212} love{G26}.
The F.O.G *
(8) I'm not speaking this as a command but rather to examine by the eagerness of others, the genuineness of your love
The F.O.G Message *
Young's Literal Translation
not according to command do I speak, but because of the diligence of others, and of your love proving the genuineness,