Whole pali canon focus on illusion analysis for purge illusion first

In tipitaka, only 121 minds, 52 mind-factors, 28 matters, and 1 nibbāna are not illusion. The other else are illusion. This is very important, because it is a start point to understand 3 characterizes.
12 paṭiccasamuppāda, both arising and cessation, are only the relativity of minds, mind-factors, matters, and nibbāna. They cause each other arise by themselves. If the practitioner still believe in an illusion, such as person, as the cause of 12 paṭiccasamuppāda, then he will not see the relativity of 12 paṭiccasamuppāda. Therefore, he can not meditate insight meditation in 3 characterizes in every second of life.

For the example, god is an illusion

1. When you still believe in god, do you understand 12 paṭiccasamuppāda of god?(no)
2. Then can you think God is impermanent, suffering, non-self? (no).
3. But if you understand how god can analysis as 12 paṭiccasamuppāda, then no god anymore right? (yes)
4. When no god anymore, 12 paṭiccasamuppāda, which you have been called it as god, can appear as impermanent, suffering, and non-self, right? (yes)

So whole pali canon focus on illusion analysis for purge illusion first

1. The first of all sutta, Sutta Pitaka Vol 1 : 1. Sutta. Tī. Sī Brahmajālasuttaṃ, is the biggest sutta which teaching about 62 self-illusion analysis. After buddha showed all 62 self-illusion, then buddha conclude them, 62 self-illusion analysis, as 12 paṭiccasamuppāda at the end.
2. The first fetter is sakkāya-diṭṭi, which have to destroyed by the practitioner first of all 10 fetters.
3. After jhāna meditation, whole tipitaka structure focus on diṭṭhi-analysis first for the insight meditation beginner, before comprehensions on "impermanent, suffering, and non-self".
4. Attavādupādāna-cessation, diṭṭhi-analysis/self purging, is taught only inside Buddhism according to MN Cūḷasīhanādasutta.
5. Sāriputta, the right-hand man of Buddha, described insight meditation by that same structure, in Sutta KN Paṭisambhidāmagga (whole structure).
6. 0 BE ancient commentary described insight meditation by that same structure.
7. 3th BE 3rd buddhist council members, arahanta, judge titthiya-monks by illusion analysis ability testing as well. See Abhidhamma Pitaka Vol 4 : Abhi. Kathāvatthu (whole structure).
8. 10th BE commentary, such as visuddhimagga (path of purification), described insight meditation by that same structure (whole structure).
9. 16th BE commentary, such as abhidhammatthasaṅgaha, described insight meditation by that same structure (whole structure).
10. Vimuttimagga described insight meditation by that same structure (whole structure).
11. Burmese monks, such as pa-auk monastery, described insight meditation by that same structure (whole structure).
12. Thai monks, such as Bh. Mun Bhuridatta who is the leader teacher of all thai forest monk, described insight meditation follow to abhidhammatthasangaha as well.