In plain words
For man, to recognise God's wish and act by it is a hard task
We must make a fitting effort to guard this principle, this power called sweetness, that is in every man. Such tyāga, such holy sweetness, we find only in the mother. For the sake of her children the mother gives up even her own life and makes many efforts to protect them. So the chief duty of every man is to recognise such a mother's tyāga and to act by it. Such tyāga we see only in the mother. That is why the ancient Upaniṣads went on teaching, ‘Mātṛdevo bhava, pitṛdevo bhava.’ Because she gave up her life for this Prema, she earned the fitting name ‘Mātṛdevo bhava.’ The Veda's authority is that wherever the parents are, there God is. Whatever fruits people gain by worshipping God, those same fruits man gains by loving his parents. Truly, the worship of God is not easy. In the world crores upon crores of people perform the worship of God and make many efforts to have their wishes fulfilled. The worship of God is very hard. God is beyond man's wish. Man cannot recognise God's will. It is not possible to recognise in what kinds of worship God takes delight. God is beyond man's feeling. So for man to recognise His wish and act by it is a hard thing.
The duty of children is to recognise what makes their parents happy, and to act by it
Truly, every son and every daughter knows what their parents' feelings are, and what their parents' wishes are. The duty of children is to recognise what manner of prayer brings their parents joy, and to act by that feeling. By declaring a divinity that is beyond this feeling, no wish of yours can be fulfilled.