To do for

To answer for; to serve as; to suit.
To put an end to; to ruin; to baffle completely; as, a goblet is done for when it is broken.

See also: Do, Do

References in periodicals archive ?
Sanctity does not mean being pious or perfect, but doing for God's sake what you used to do for your own sake.
So they're all, "Show us what you're going to do for the show.