Of the blessed God (tou makariou theou). Applied to God only here and 1Ti 6:15, but in Tit 2:13 makarios occurs with elpis (hope) of the “epiphany of our great God and Saviour Jesus Christ.”
Which was committed to my trust (ho episteuthēn egō). “with which (ho accusative retained with first aorist passive verb episteuthēn) I was entrusted.”