ἐνδείκνυσθαι
From LSJ
Οὐκ ἔστιν οὐδείς, ὅστις οὐχ αὑτῷ φίλος → Nemo est, amicus ipse qui non sit sibi → Den gibt es nicht, der nicht sich selber wäre Freund
Greek > English (Woodhouse Verbs Reversed)
(see also ἐνδείκνυμι): display, exhibit, prove, show, give proof of, make a display of
Lexicon Thucydideum
demonstrare, ostentare, to point out, display, 4.126.6, 8.82.3.