Existence is the coherence of manifested (๐ข๐๐ฃ) and un-manifested (๐ฅ๐๐ง๐๐ข๐๐ฉ๐ข๐). Basic interactions happen at a man to man level with disregard to ๐ฅ๐๐ง๐๐ข๐๐ฉ๐ข๐; Krishna termed this as the path of demons (7.15). The next level of interaction is between man and ๐ฅ๐๐ง๐๐ข๐๐ฉ๐ข๐. This transition starts as one gets tired of chasing mirages or is vexed by misery.
In this regard, Krishna says these interactions or worship between ๐ข๐๐ฃ and ๐ฅ๐๐ง๐๐ข๐๐ฉ๐ข๐ are of four types. The first category of worshippers want to remove their difficulties, the second want to attain wealth, success or peace of mind, the third want to attain knowledge and the fourth are ๐ ๐ฃ๐๐ฃ๐ (wise) (7.16).
He says that the first three, who are otherwise deprived of wisdom, approach different forms (Gods) to fulfil their desires (7.20). This is like consulting the concerned doctor based on ailments. He further says that when they worship with ๐จ๐๐ง๐๐๐๐๐ (trust with commitment), he (Krishna) makes that ๐จ๐๐ง๐๐๐๐๐ unflinching (7.21) and their desires get fulfilled because of their ๐จ๐๐ง๐๐๐๐๐ (7.22) but these three paths give limited results (7.23).
Firstly, this appears to run contrary to 'performing our ๐ ๐๐ง๐ข๐ without expecting the fruits of action (2.47)' which is the fundamental attribute of the eternal state. Out of compassion, Krishna is helping us with the gradual transition from evil or darkness to the bright light of the eternal state which is desireless.
Secondly, he says that their ๐จ๐๐ง๐๐๐๐๐ fulfils their desires and he is behind that ๐จ๐๐ง๐๐๐๐๐. This implies that our ๐จ๐๐ง๐๐๐๐๐ in a relationship; towards God or towards work bestows due rewards to us. If we ever attained anything in the physical world it's because of the presence of our ๐จ๐๐ง๐๐๐๐๐. ๐๐๐ง๐๐๐๐๐ is the same dedication even in adverse situations where we need to have patience and that's why it is said '๐จ๐๐ง๐๐๐๐๐ with ๐จ๐๐๐ช๐ง๐ (patience)'.