The number of Christian workers is estimated at around 14.50 million in 2025, about 0.17% of the world population. Cross-cultural missionaries number about 445,000, or about 0.005%. But Christians make up 28.8% of the population worldwide. For every Christian worker, there are about 395 people who are not able to believe in Jesus Christ; for every cross-cultural worker, there are about 12,326; but for every one Christian, there are only about 2.3 people who are not able to believe in Jesus Christ. And these people who are unable to believe are not in some remote jungle; they are among family members, friends, neighbors, and coworkers. Therefore, equipping these Christians as witnesses is vital.