Lord Krishna has all the qualities of Godhead. He is very beautiful, pleasing, ever youthful, effulgent, strong, truthful, highly learned & highly knowledgeable. Lord Krishna talks very pleasingly, is very fluent, is highly intelligent & is a genius. He is the authority of Vedas & all the scriptures. He is magnanimous, compassionate, forbearing & always forgiving. He is the well-wisher of devotees & is controlled by love only. He is all-auspicious, very powerful, worshiped by all, all-opulent & the supreme controller of this Universe. Uncountable universes come out from His body & He is the source of all creations. He is also the source of all incarnations that happen from time to time.
Lord Krishna is almighty, all powerful & everyone prays to Him but there is a cult of devotion in which a person falls in Love with Lord Krishna & there is a burning desire in that person's mind to meet Lord Krishna. Lord Krishna is ‘Supreme Deity” & praying Him, having devotion in Him will remove all sins of a person & that person shall get divine bliss in life.
In "Bhagwat Gita", Lord Krishna Says that if a person is devoted to God only then God rescues that person from ocean of Birth & Death i.e. that man becomes eligible for permanent life beyond death forever with God.
"Ye tu srvani krmani
myi sanyasya mat-para
maam dhyayant upasate '
' Tesham-aham samud-dharta
bhavami na-chirat parth
mayy-avesita-chetsam" (Bhagwat Gita: Chapter XII verse 6-7)
'Those people, who worship Me by surrendering all their activities unto Me, are always devoted to Me, always meditate upon Me, Having always fixing their minds upon Me, O Parth - to them, I swiftly rescue from the ocean of birth and death.'
"sarva-bhuta-sthitam yo mam
bhajaty ekatvam asthitah
sarvatha vartamano ’pi
sa yogi mayi vartate" (Bhagwat Gita: Chapter Six verse 31)
"Sri Krishna said: O Arjuna, Such a yogi, who engages in the worshipful service of the Super soul, knowing that I and the Super soul are one, remains always in Me in all circumstances."
"satatam kirtayanto mam
yatantas cha drdha-vratah
namasyantas cha mam bhaktya
nitya-yukta upasate" (Bhagwat Gita: Chapter Nine verse 14)
"Sri Krishna said: O Arjuna, Always chanting My glories, endeavouring with great determination, bowing down before Me, these great souls perpetually worship Me with devotion."
So let's be devoted to Lord Krishna always. Let's sing His Glories, read literature regarding Him & also do loving service to humanity (charity etc.) in His name.
Jai Sri Krishna