Lord Krishna, in His Bhagavad Gita , the song of God , makes a condition to approach Him , He says, “Think of Me , become my devotee , offer homage and worship Me , you will certainly come to Me .” Certainly, that’s how love works , even in the material world, the lover is always thinking of the lover , or the mother is always thinking of the child .
But when Krishna came as Mahaprabhu He did not make any conditions , He freely is distributing love of God to one and all the deserving and undeserving.
A C Bhaktivedanta Swami Prabhupada tells the secret of how the undeserving and impious persons are able to immediately purify their existence and approach the Supreme Personality of Godhead , Prabhupada demonstrates it . He told Bhaja Hari his disciple .when a tramp was seen sleeping on a park bench whilst on a morning walk , that such a person and others like Him can be immediately purified of sins . Sins which are bearing results now , in the near future and distant future , all eradicated . Prabhupada said , “we are creating their good fortune , by chanting the Holy names , they hear God names , by distributing prasadam and by trancendental litratures and thus all methods are engaging everyone in the highest of Sukriti activities.
Thus, there is no need for a previous good sukriti , either karma or jnana , because we immediately are giving Bhakti sukriti the highest of benefits , the usual Vedic systems required to approach God is to aquire much piety. In this age one can very soon develop the highest standards and highest spiritual culture that enable anyone to think of Him and serve Him and enter into a relationship. Of course, those that have got some trancendental pedigree from previous practice will generally be able to dive deeper and quickly into the ocean of love of God , but not in all cases.
Lord Nityananda led this mass distribution of love of God and trancendental Sukriti to one and all under the direction of Sri Caitanya Mahāprabhu , and the magnificent display of these great benedictions were brought to the world by A.C . Bhaktivedanta Swami Prabhupada , which was very much the desire of Srila Bhaktivinod Thakur and Srila Bhaktisiddanta Sarasvati Goswami , and how inconceivably and perfectly Prabhupada carried those desires out and practically enacted them