According to Osho, personal experiences in spirituality can validate a concept for the experiencer without universal replication or external verification. Religious inquiry is subjective; its fruits are self-evident only within. Others can only infer or recognize it if the same awakening has happened in them. Hence teaching proceeds stepwise, offering only preliminaries until inner capacity matures; real proof comes through one’s own experiment.
You can know a spiritual truth only by feeling it yourself, and others will understand it only when they feel the same inside.