Bg 6.47

yoginam api sarvesam
mad-gatenantar-atmana
sraddhavan bhajate yo mam
sa me yukta-tamo matah

Word for word: 
yoginam — of yogis; api — also; sarvesam — all types of; mat-gatena — abiding in Me, always thinking of Me; antah-atmana — within himself; sraddha-van — in full faith; bhajate — renders transcendental loving service; yah — one who; mam — to Me (the Supreme Lord); sah — he; me — by Me; yukta-tamah — the greatest yogi; matah — is considered.

Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
And of all yogis, the one with great faith who always abides in Me, thinks of Me within himself and renders transcendental loving service to Me – he is the most intimately united with Me in yoga and is the highest of all. That is My opinion.

Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
The word bhajate is significant here. Bhajate has its root in the verb bhaj, which is used when there is need of service. The English word “worship” cannot be used in the same sense as bhaj. Worship means to adore, or to show respect and honor to the worthy one. But service with love and faith is especially meant for the Supreme Personality of Godhead. One can avoid worshiping a respectable man or a demigod and may be called discourteous, but one cannot avoid serving the Supreme Lord without being thoroughly condemned. Every living entity is part and parcel of the Supreme Personality of Godhead, and thus every living entity is intended to serve the Supreme Lord by his own constitution. Failing to do this, he falls down. The Bhagavatam (11.5.3) confirms this as follows:

ya esam purusam saksad
atma-prabhavam isvaram
na bhajanty avajananti
sthanad bhrastah patanty adhah

“Anyone who does not render service and neglects his duty unto the primeval Lord, who is the source of all living entities, will certainly fall down from his constitutional position.”

In this verse also the word bhajanti is used. Therefore, bhajanti is applicable to the Supreme Lord only, whereas the word “worship” can be applied to demigods or to any other common living entity. The word avajananti, used in this verse of Srimad-Bhagavatam, is also found in the Bhagavad-gita. Avajananti mam mudhah: “Only the fools and rascals deride the Supreme Personality of Godhead, Lord Krishna.” Such fools take it upon themselves to write commentaries on the Bhagavad-gita without an attitude of service to the Lord. Consequently they cannot properly distinguish between the word bhajanti and the word “worship.”

The culmination of all kinds of yoga practices lies in bhakti yoga. All other yogas are but means to come to the point of bhakti in bhakti-yoga. Yoga actually means bhakti-yoga; all other yogas are progressions toward the destination of bhakti-yoga. From the beginning of karma-yoga to the end of bhakti-yoga is a long way to self-realization. Karma-yoga, without fruitive results, is the beginning of this path. When karma-yoga increases in knowledge and renunciation, the stage is called jñana-yoga. When jñana-yoga increases in meditation on the Supersoul by different physical processes, and the mind is on Him, it is called astanga-yoga. And when one surpasses the astanga-yoga and comes to the point of the Supreme Personality of Godhead Krishna, it is called bhakti-yoga, the culmination. Factually, bhakti-yoga is the ultimate goal, but to analyze bhakti-yoga minutely one has to understand these other yogas. The yogi who is progressive is therefore on the true path of eternal good fortune. One who sticks to a particular point and does not make further progress is called by that particular name: karma-yogi, jñana-yogi or dhyana-yogi, raja-yogi, hatha-yogi, etc. If one is fortunate enough to come to the point of bhakti-yoga, it is to be understood that he has surpassed all other yogas. Therefore, to become Krishna conscious is the highest stage of yoga, just as, when we speak of Himalayan, we refer to the world’s highest mountains, of which the highest peak, Mount Everest, is considered to be the culmination.

It is by great fortune that one comes to Krishna consciousness on the path of bhakti-yoga to become well situated according to the Vedic direction. The ideal yogi concentrates his attention on Krishna, who is called Syamasundara, who is as beautifully colored as a cloud, whose lotuslike face is as effulgent as the sun, whose dress is brilliant with jewels, and whose body is flower-garlanded. Illuminating all sides is His gorgeous luster, which is called the brahma-jyotir. He incarnates in different forms such as Rama, Nrsimha, Varaha and Krishna, the Supreme Personality of Godhead, and He descends like a human being, as the son of mother Yasoda, and He is known as Krishna, Govinda and Vasudeva. He is the perfect child, husband, friend and master, and He is full with all opulences and transcendental qualities. If one remains fully conscious of these features of the Lord, he is called the highest yogi.

This stage of highest perfection in yoga can be attained only by bhakti-yoga, as is confirmed in all Vedic literature:

yasya deve para bhaktir
yatha deve tatha gurau
tasyaite kathita hy arthah
prakasante mahatmanah

“Only unto those great souls who have implicit faith in both the Lord and the spiritual master are all the imports of Vedic knowledge automatically revealed.” (Svetasvatara Upanisad 6.23)

Bhaktir asya bhajanam tad ihamutropadhi-nairasyenamusmin manah-kalpanam, etad eva naiskarmyam. “Bhakti means devotional service to the Lord which is free from desire for material profit, either in this life or in the next. Devoid of such inclinations, one should fully absorb the mind in the Supreme. That is the purpose of naiskarmya.” (Gopala-tapani Upanisad 1.15)

These are some of the means for performance of bhakti, or Krishna consciousness, the highest perfectional stage of the yoga system.

Thus end the Bhaktivedanta Purports to the Sixth Chapter of the Srimad Bhagavad-gita in the matter of Dhyana-yoga.