For ye died (απεθανετε γαρ). Definite event, aorist active indicative, died to sin (Romans 6:2).

Is hid (κεκρυπτα). Perfect passive indicative of κρυπτω, old verb, to hide, remains concealed, locked "together with" (συν) Christ, "in" (εν) God. No hellish burglar can break that combination.