drive home
Make clearly understood, make a point, as in The network news programs drive home the fact that violence is part of urban life. This expression uses the verb drive in the sense of “force by a blow or thrust” (as in driving a nail). Samuel Hieron used it in Works (1607): “That I may … drive home the nail of this exhortation even to the head.”
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. Related Words for drive home stress, set, fix, inculcate, press, establish, instill, reiterate, continue, drudge, endeavor, grind, instruct, persevere, persist, repeat, work