Every comfort of the world and freedom from all kinds of troubles can be obtained by worshipping God
Bhagawan Shri Krishna in the 16th verse of the seventh chapter in the Bhagwat Geeta said:
O best amongst the Bharatas (Arjuna), four kinds of pious people engage in my devotional service—the distressed, the inquisitive, the seekers of worldly possessions, and those who are situated in knowledge. (Bhagavad Geeta 7:16)
Of these, the wise one who is in full knowledge in union with Me through pure devotional service is the best. For I am very dear to him, and he is dear to Me (Bhagavad Geeta 7:17)
All these devotees are undoubtedly magnanimous souls, but he who is situated in knowledge of Me I consider verily to dwell in Me. Being engaged in My transcendental service, he attains Me. (Bhagavad Geeta 7:18)
After many births and deaths, he who is actually in knowledge surrenders unto Me, knowing Me to be the cause of all causes and all that is. Such a great soul is very rare. (Bhagavad Geeta 7:19)
Those whose knowledge has been carried away by material desires surrender to the celestial gods. Following their own nature, they worship the demigods, practicing rituals meant to propitiate these celestial personalities. (Bhagavad Geeta 7:20)
I am in everyone's heart as the Super soul. As soon as one desires to worship the demigods, I make his faith steady so that he can devote himself to some particular deity. (Bhagavad Geeta 7:21)
Endowed with faith, the devotee worships a particular demigod and obtains the objects of desire. But in reality, I alone arrange these benefits. (Bhagavad Geeta 7:22)
Men of small intelligence worship the demigods, and their fruits are limited and temporary. Those who worship the demigods go to the planets of the demigods, but My devotees come to me. (Bhagavad Geeta 7:23)
In the Bhagwat Geeta, Bhagwan has made it very clear that one gets exactly the same spirit in return for the spirit with which one worships God. This world is a vast form of the Supreme Power- one who understands this in its elemental nature, his sense of doer-ship gets destroyed completely. In such a situation, in spite of living in the world, whatever action he performs, he remains free from any karmic bondage.
In this relation, Bhagwan has said that in the end, after many births, the being is able to understand God by elemental knowledge.
That is why in the 66th verse of the 18th chapter Bhagwan has clearly stated:
Abandon all varieties of dharmas and simply surrender unto me alone. I shall liberate you from all sinful reactions; do not fear. (Bhagavad Geeta 18:66)
In spite of such a clear assurance, there is so much darkness in the world that the being is not able to understand anything.
From this, what God said in the fourth chapter, makes sense.
Whenever there is a decline in righteousness and an increase in unrighteousness, O Arjun, at that time I manifest myself on earth.
- Bhagwan Shri Krishna
That time is not far off. The solution to such a deplorable condition of the world looks impossible without the descent of the Supreme Power. It has now become impossible to remove the darkness in the world by feeble powers.