"Now how can [the outsiders] call on one in whom they have never believed? How can they believe in one of whom they have never heard? And how can they hear unless someone proclaims him? And who will go to tell them unless he is sent? As the scripture puts it: ‘How beautiful are the feet of those who preach the Gospel of peace, who bring glad tidings of good things!’" (Romans 10:14,15)
If you're into this kind of thing, what Paul just gave us is a descending deductive chain argument, where true premises link with each other toward a clear, logical conclusion. And I call it a "descending" deductive chain because it starts at the whole and descends to the level of the individual. Take a look at how it would read if he'd taken it in the reverse, ascending order:
Unless someone is sent, then they will not go, and nothing will be proclaimed, no one will hear, and none will believe or ever call on Jesus.
But let's flip that into the positive, shall we?
If one is sent, and goes, and proclaims, then others will hear, and believe, and call on Jesus.
So let's get down to brass tacks. Who are the ones whose "beautiful feet" are meant to bear the "glad tidings of good things," ie. Who has already been sent? (I'll give you a hint: They were looking at you in the mirror, this morning, while you brushed your teeth.)
You are a "sent" one - an apostle - and it's your beautiful feet that are called to carry forth the Gospel today. If you go, in the Spirit and Way of Jesus, your proclamation will be the actual way that others get to hear. And if they hear - and when they get to see it be true in your life today - there is a wonderful chance they'll believe. That they'll say yes for themselves and call on His name...
Let's let Him do His thing, in us, and through us today!