Babaji is explaining the duties of a Vaisnavas, daily sadhana and miscellaneous rules, keeping in mind the lifestyle, responsibilities, capabilities, and availability of time of a modern-day devotee.
We can’t know our father because we did not exist at the time of conception. We can’t know our mother because we have no awareness at the time of birth. Yet we accept them with full faith. Similarly, we can’t know God, but we should accept on the authority of sastra, and holy people.