evils. calamities. Hebrew. ra'a'. App-44.
iniquities. Put by Figure of speech Metonymy (of Cause), App-6, for their punishment. Hebrew. 'aven. App-44. Laid on Him as the substituted sacrifice.
am not able. was not able.
are more. were more.
heart. Put by Figure of speech Metonymy (of Adjunct), App-6, for courage.
faileth me. failed me.