The Bible says when this word of God shall be preached till the ends of the world, then comes the end. Now has the Word not yet been preached till the ends of the world?
To answer this question we need to look at the verse from which the question is derived. In this case there are two parallel verses. Using the English Standard Version, I will quote from the passage in the Gospel of Matthew. Matthew 24:14 reads, “And this gospel of the kingdom will be proclaimed throughout the whole world as a testimony to all nations, and then the end will come.”
A people group
Our answer depends on how we define the word “nations.” The word “nation” as found in Matthew 24:14 is the Greek word “Ethnos.” The meaning of the word Ethnos may be best defined as a multitude of individuals of the same nature or genus, or more simply put a people group.
If we think of the word nation as simply a geopolitical boundary then certainly the Gospel has been preached to every nation. However, the Biblical understanding is a people group. With this definition the task is far from over.
A helpful resource
A resource that I have found very helpful is the Joshua Project. You can find the Joshua Project online. The address is www.joshuaproject.net
On the site you will find information concerning unreached people groups. I encourage all to go take a look.