nigūḍha—very deep; caitanya-līlā—the pastimes of Lord Caitanya; bujhite—to understand; kā'ra—of whom; śakti—the power; sei bujhe—he understands; gauracandre—unto Lord Śrī Caitanya Mahāprabhu; yāṅra—whose; dṛḍha bhakti—fixed devotion.