Following are a number of back-translations of Romans 10:15:

• Uma: “And who will announce it to them if no one is sent/apostled? As is written long ago in the Holy Book: ‘Very good is the arrival of people bringing the good news!'” (Source: Uma Back Translation)
• Yakan: “How can they be told if people who tell are not commanded to go? But there are people commanded by God to go tell them. As it is said in the holy-book, ‘We (dual) are indeed very happy when/if someone arrives bringing us (dual) good news.'” (Source: Yakan Back Translation)
• Western Bukidnon Manobo: “And it is only possible for someone to go and tell, if God sends him. But there is someone God has sent, for it’s just like what was spoken in the written word of God which says, ‘How welcome is the arrival of the people who spread the Good News.'” (Source: Western Bukidnon Manobo Back Translation)
• Kankanaey: “And how also can people go and preach-it if no one sends them? But the truth of it is that some have been sent, because there is that which God caused-to-be-written which says, ‘The coming of one who brings good news exceedingly causes-happiness!'” (Source: Kankanaey Back Translation)
• Tenango Otomi: “And how can anyone be told the word if no one is sent to go and tell the word? There in the Holy Book it says: ‘Beautiful it is when there come the people who tell the good news, telling how to get right with God.'” (Source: Tenango Otomi Back Translation)

For the Old Testament quote, see Isaiah 52:7