τὸ γὰρ βραχύ τι τοῦτο πᾶσαν ὑμῶν ἔχει τὴν βεβαίωσιν καὶ πεῖραν τῆς γνώμης → this trifle contains the whole seal and trial of your resolution
subs.
P. and V. πᾶς, πᾶς τις, ἕκαστος. οὐδεὶς ὅστις οὐ, V. οὐδεὶς ὃς οὐ.