{Hearest thou} (akoueis). In a rage at the desecration of
the temple by the shouts of the boys they try to shame Jesus, as
responsible for it.

{Thou hast perfected} (kat(8872)tis(935c)). The quotation is from  Ps
8:3  (LXX text). See  4:21  where the same verb is used for
mending nets. Here it is the timeless aorist middle indicative
with the perfective use of kata-. It was a stinging rebuke.