After achieving enlightenment, a Tirthankar shows others the path to enlightenment. The Tirthankar's religious teachings form the Jain canons. The inner knowledge of all Tirthankars is perfect and identical in every respect, for the teachings of one Tirthankar do not contradict those of another. However, the degree of elaboration varies according to the spiritual advancement and purity of humans during that period. The higher the spiritual advancement and purity of mind, the lower the elaboration required.