Hosea

http://www.raystedman.org/bible-overview/adventuring/hosea-the-prophet-and-the-prostitute
Click the link above and read Hosea: The Prophet and the Prostitute
So Hosea went to the marketplace and he watched Gomer brought up and placed on the dock and there she was stripped of all her clothing and stood naked before the crowd. The auctioneer pinched her and prodded her and showed how strong she was, and then the bidding began. Somebody bid three pieces of silver and Hosea raised it to five. Somebody else upped it to eight and Hosea bid ten. Somebody went to eleven; he went to twelve. Then Hosea offered fifteen pieces of silver and a bushel of barley. The auctioneer's gavel fell and Hosea had his wife back.

He went to her and put her clothes on her and he led her away by the hand and took her to his home. And then follows what is perhaps the most beautiful verse in all the Bible. As Hosea led her away he said to her:
"You must dwell as mine for many days; you shall not play the harlot, or belong to another man; so will I also be to you." (Hosea 3:3b RSV)
He pledged his love to her anew. And that was all this poor woman could take. She had gotten down to the very dregs of shame and disgrace, but the love of this man broke her heart, and from this time on Gomer was faithful to Hosea. She became an honest. industrious, faithful wife, and the rest of the book of Hosea simply goes on to tell the effect of this story on the nation of Israel -- God said to them. "How can I give thee up?' He reminded them of his love for them all those years. He reminded them of his goodness, and of how again and again they had turned their backs on him. The final picture of the book is one of beauty and glory, for it looks to the day when Israel shall at last return to God -- her true husband -- and shall say, "What have I to do with idols? I have seen him and heard him and he has won my heart."