JMNT(i)
25 For it is binding and necessary for Him to be continuously reigning (ruling as King; exercising sovereignty) until which [time or situation] (or: until where) He would put (or: may place; could set) all the things that have or hold ruin (or: the enemies) under His feet.
26 [The] last holder of ruin (or: enemy; quality having ill-will) being progressively brought down to idleness (made unemployed and ineffective; rendered useless and unproductive) [is] the Death (or: Death, a last enemy, is being presently nullified and abolished).