Japa is a mantra in Hinduism and Buddhism that repeats “a name for God.” Christians refer to this as ejaculatory prayer. Japa can be practiced with or without a rosary or beads. Repetition of a name for God centers a person in God. God and God’s ways become thought about constantly. This purifies a person. Purity leads a person to realize the Divine Indwelling, Atman, Image, and Likeness, etc. Hinduism, Buddhism, and Christianity tell that the Divine Indwelling is the essence of a person or the “real self.” The person clarifies contact with the Divine Indwelling which is the spiritual life principle of the universe. The Divine Indwelling has been called the “hidden observer” and observes a person’s thought processes and everything else.
Japa – Wikipedia
mantra – Oxford Languages