"For as the rain and the snow come down from heaven and do not return there but water the earth, making it bring forth and sprout, giving seed to the sower and bread to the eater, so shall my word be that goes out from my mouth; it shall not return to me empty, but it shall accomplish that which I purpose, and shall succeed in the thing for which I sent it.” – Isaiah 55:11
"So shall my word. . .accomplish that which I please"
Whenever God’s word goes forth, it accomplishes what it is intended to do, in every single instance. Of that I am convinced.
So it is whenever the true gospel is preached. By true gospel I mean that, as Paul stated so clearly, “Christ died for our sins.”
It pleases God to save men, so he sends his spirit to give life to the ‘dead in trespasses and sin’ (Eph 2:1), shows them their condition apart from Christ (deserving of just wrath [Eph 2:3]), offers them the substitute who drank that cup of wrath on their behalf, and they freely and willingly embrace Christ.
I have found nothing in scripture that tells me that God only brings lost men and women half-way,but only that the work he begins in a person, he also brings to completion in Glory.
“And I am sure of this, that he who began a good work in you will bring it to completion at the day of Jesus Christ. “ – Phil 1:6