This verse illustrates the difference between ksatriyas and innocent vaisyas. By studying the political situation, Vasudeva could see what would happen, whereas Nanda Maharaja, the king of the agriculturalists, could only guess that Vasudeva was a great saintly person and had developed mystic powers. Vasudeva actually had all mystic powers under his control; otherwise he could not have become the father of Krsna. But in fact he foresaw the calamities in Vraja by studying Kamsas political activities and thus warned Nanda Maharaja to take precautions, although Nanda Maharaja thought that Vasudeva had predicted this incident through wonderful mystic powers. By mystic powers gained through the practice of hatha-yoga, one can study and understand the future.