G4705–σπουδαῖος–spoudaios

For he received indeed the entreaty, but, being full of zeal, he went of his own accord to you;

σπουδαιότερος spoudaioteros “very earnest”

And we have sent with them our brother whom we have often proved to be of diligent zeal in many things, and now more diligently zealous through the great confidence [ergänzt: he has] as to you.

σπουδαῖον spoudaion “earnest”σπουδαιότερον spoudaioteron “earnest”