So Ṛṣabhadeva says: "My dear boys," mahat-sevāṁ dvāram āhur vimukteḥ (SB 5.5.2). "If you at all . . . if you are at all desirous or eager to attain that perfectional stage of life, then the path is mahat-sevā. You associate or you serve great personality who are devotees of the Lord." Mahat-sevāṁ dvāram āhur vimukteḥ. Mahat means great soul. Who is great soul? A great soul is a great devotee of the Lord. That is great soul. Who has captured the Supreme Soul, he's great soul.
We are . . . we are very small. Our identity, magnitude, as stated in the Vedic literature, it is one ten-thousandth part of the tip of the hair. It is very small. You cannot even imagine. So we are very small, but we can become the greatest, almost as good as God, if we engage ourself in the transcendental loving service of the Lord.
You have got best example. Just like Lord Jesus Christ: he . . . he's worshiped as good as God because he dedicated everything for God. Similarly, if you also dedicate your life, your intelligence, your money . . . prāṇair arthair dhiyā vācā. By four things you can attain greatness, almost greatness like God. How? By engaging your life, your wealth, prāṇair arthair dhiyā, your intelligence . . . if you have no money, then you can apply your intelligence. If you have no intelligence, you can simply carry the words of God. In that way you can achieve the greatest perfection of life.
If somebody has money, all right, he can spend for spreading this Kṛṣṇa consciousness movement. If he has no money, he can give his intelligence, how we can push on this Kṛṣṇa consciousness movement. If he has no intelligence, simply carry this word and speak to the people, "My dear friend, you simply chant Hare Kṛṣṇa." You see? So any way you can engage yourself in Kṛṣṇa consciousness, that is called mahat-sevā, service of the Supreme, or service of the Supersoul. Mahat-sevāṁ dvāram. If you accept this way of life, then your spiritual life will be open. Mahat-sevāṁ dvāram āhur vimukteḥ.