Continuing Dependent Origination. For further reading: PDF download - Ven.P.A.Payutto : Dependent Origination - The Buddhist Law of Conditionality. For a deeper understanding: Bhikkhu Bodhi - The Great Discourse on Causation DN15
The deity Brahma Sahampati appeared before the Blessed One and urged the Buddha to teach to those who had little dust in their eyes so that they could learn the Dhamma and practice for their own awakening.