So in case it has, I’d like to read the concluding paragraph from the NIV Application Commentary about this section of Scripture:
On a different note, there is strong encouragement in Jesus’ statement. Even though at times opposition appears to be insurmountable, true Christianity will assert itself in the preaching of the gospel message. The prophetic statement of Jesus assures us that nothing can stop this. To the churches around the world that persevere under governments that have legislated against evangelism or proselytizing – for example, in some Islamic or communist nations – this is a powerful, immediately relevant promise. This is also a powerful promise to those in Western countries that have become increasingly secularized. No matter how bad things may get within public opinion or the political arena, no matter how much government may legislate against Christianity, or no matter how much persecution is mounted against it, the gospel cannot be stopped until the end, when Jesus returns in glory and power. (p. 795)