In this sermon, the speaker emphasizes the importance of the 40 days that Jesus spent on earth after His resurrection. He explains that during this time, Jesus trained His disciples to shift their focus from external things to internal revelation, from the flesh to the Holy Spirit, and from the law to life. The speaker shares a personal anecdote about a turbulent airplane ride to illustrate the need for Christians to rise above fear and rely on the Holy Spirit. He concludes by urging the audience to prioritize their personal encounter with the Lord and the experience of being filled with the Holy Spirit.