kṛṣṇera svarūpa-gaṇera — of Lord Kṛṣṇa in His various expansions; sakala — all; haya — there is; jñāna — knowledge; vidhi-rāga-mārge — in the process of devotional service under regulative principles or in spontaneous love; sādhana bhaktira vidhāna — the authorized means of executing devotional service.