If one worships the Deity in the temple, one’s mind will naturally be absorbed in thought of the Lord and His form. There is no distinction between the form of the Lord and the Lord Himself. Therefore bhakti-yoga is the most easy system of yoga. Yogīs try to concentrate their minds upon the form of the Supersoul, Viṣṇu, within the heart, but this same objective is easily achieved when one’s mind is absorbed in the Deity worshiped in the temple. In every temple there is a transcendental form of the Lord, and one may easily think of this form. By seeing the Lord during ārati, by offering bhoga and by constantly thinking of the form of the Deity, one becomes a first-class yogī. This is the best process of yoga, as confirmed by the Supreme Personality of Godhead in Bhagavad-gītā (6.47) :

yoginām api sarveṣāṁ mad-gatenāntarātmanā śraddhāvān bhajate yo māṁ sa me yuktatamo mataḥ

“Of all yogīs, he who always abides in Me with great faith, worshiping Me in transcendental loving service, is most intimately united with Me in yoga and is the highest of all.” The first-class yogī is he who controls his senses and detaches himself from material activities by always thinking of the form of the Lord.