Wherever Paul went on his missionary journeys, God raised up other Christians to assist him. In Acts 18, we see this ecclesiastical synergy at work again.
On his missionary journeys, Paul encountered many kinds of people. He had to be able to relate to them all in order to spread the good news of Jesus Christ.
We often hold our plans with tightly clenched fingers, seeking control over our schedules and mastery over interruptions. But God's plans cannot be thwarted by our own.