[Jesus] sent them to preach the kingdom of God and to heal the sick. Luke 9:2
Most nations send an ambassador to live in the capital of other countries. Ambassadors only have the authority granted to them by their country’s government. But their status is official. When they speak, they speak for their nation. And when they act, they are expected to act as their own government would act.
The apostle Paul said that he, and his co-workers, were “ambassadors for Christ, as though God were [speaking] through [them]” (2 Corinthians 5:20). When Paul spoke, he spoke the Word of God. Christ had commissioned him to go and speak—to represent the Kingdom of God to the world (Acts 9:15; 23:11; 26:15-18). Paul wasn’t the first kingdom ambassador to be sent by Jesus. He had sent the twelve disciples (Matthew 10; Mark 6; Luke 9), and then another group of seventy (Luke 10). He sent them to do the same thing He had been doing: preach about the kingdom and heal the sick.
Like Paul, we are ambassadors, sent to represent King and kingdom in this world. And He is with us, until the end of the age (Matthew 28:20).
God never said that the journey would be easy, but He did say that the arrival would be worthwhile. Max Lucado