John Gill emphasizes the importance of understanding that no prophecy in Scripture is subject to private interpretation or human invention. He clarifies that while believers have the right to read and interpret Scripture, true understanding comes from the guidance of the Holy Spirit rather than personal wisdom alone. Gill argues that the prophecies are divinely inspired and should be heeded as a light until Christ's return, contrasting them with human predictions that lack divine authority. This understanding encourages believers to rely on the Spirit for interpretation and to appreciate the divine origin of Scripture.