Paul's mention of staying in Ephesus until Pentecost reveals his strategic approach to his missionary work. Ephesus was a major city with a large population, making it a crucial location for spreading the Christian message. By choosing to stay until Pentecost, Paul shows his dedication to making the most of the opportunities available to him. Pentecost, a significant Jewish festival, would have drawn many people to the city, providing Paul with a larger audience to hear his teachings.
This decision underscores the importance of being patient and discerning in ministry work. Paul demonstrates that sometimes it is necessary to remain in one place to nurture and grow the seeds of faith that have been planted. His example encourages believers to be attentive to where they are most needed and to be willing to invest time and effort in those places. It also highlights the value of aligning one's plans with God's timing, trusting that He will open doors and provide opportunities for His message to be shared effectively.