Thomas Boston, Works, 5:291:
All that believe are wearied, outwearied people, that find they need rest, and would fain have it; Isa. 28:12, This is the rest wherewith ye may cause the weary to rest, and this is the refreshing. Never a soul will come to Christ, till it be so wearied, that its legs are able to carry it no further, Jer. 2:24. So being quite tired out, it lies down at his door. They are outwearied of the vain world; it has disappointed them so often, that they say, There is no hope. They are outwearied of their deceitful lusts, for they find there is no satisfying of them. They see there is no rest for them there. If ye were never thus wearied, ye have never yet entered into this rest.
Source: http://www.puritanboard.com/f25/believers-wearied-outwearied-people-84421/, Comment #1