After they have experienced the extensive pleasures of the higher planets, their pious credits become exhausted and they again enter the mortal plane. Therefore, the results of those who perform Vedic rituals to obtain material enjoyment are fleeting.
Bhagavad Gita - Chapter 9 - Raja Guhya Yoga - The Yoga of the Greatest Secret
But for those who are always absorbed in thoughts of Me, who worship Me and who are always associated with Me, I carry what they lack and preserve what they have.
O Kaunteya, those that worship other demigods with faith actually worship Me, but they do so improperly.
It is I who am the enjoyer and object of all sacrifices. But those who are ignorant of My true nature fall down from the path of self-realization.
The worshippers of the demigods attain the realm of the demigods. The worshippers of the ancestors reach the domain of the ancestors. The worshippers of ghosts and spirits go to the world of the ghosts and spirits. But those who worship Me come to Me.
If one offers to Me with devotion a leaf, a flower, fruit or some water, I will accept that offering from My purehearted devotee.
O Kaunteya, whatever you do, whatever you eat, whatever you offer in sacrifice, whatever you give in charity, whatever penances you undertake, do that as an offering unto Me.
By doing so, you will become free from the bondage of karma and it’s auspicious and inauspicious effects. By renouncing the results of your actions and connecting yourself with Me, you will become liberated and attain Me.
I am equal to all living beings. I neither hate nor favor anyone. Yet whoever worships Me with devotion is with Me and I am certainly with them.
Even if one is impious and has commited abominable acts, if he worships Me with one-pointed devotion, such a person should be considered saintly because his determination is perfect.