Ruth 3:4 - Can you imagine telling your daughter to go lie won at the feet of a man she has just met for the night?
I have to admit, I don't understand the cultural goings on here in Ruth 3. She seems to demand of him that he care for her in Ruth 3:9, and he agrees, conditionally. She spends the night with Boaz, innocently at his feet, and sneaks off in the morning before first light. It would appear to the casual observer that sin is afoot, and even today we would assume that a woman who goes out to meet a man and doesn't return until morning was up to no good. Yet both Boaz and Ruth praise her for her actions. Certainly they were noble, yet they have the appearance of impropriety.
I suppose she went out at some personal risk, but did so in faith that Boaz was the honorable man he seemed to be. He could have taken advantage of her or dismissed her as an unclean outsider, but he did not. instead, he praises her faith and promises to redeem her.
Isn't this like how we approach Jesus? We come, unworthy, unclean and with nothing but the faith that he will redeem us. He has no obligation to do so, and we have nothing appealing to offer. We approach the perfect, holy God of all creation in our rags and sin, risking His rebuke in hope for that which we cannot get on our own - redemption. And we find in Jesus, like Ruth did in Boaz, our hope fulfilled.