The Viṣṇu worship is the best. Ārādhanānāṁ sarveṣāṁ viṣṇor ārādhanaṁ param. That is said by Lord Śiva to Goddess Pārvatī. Pārvatī asked Lord Śiva, "What is the best type of worship?" There are so many. It is amongst the demigods. So Lord Śiva advised, ārādhanānāṁ sarveṣāṁ viṣṇor ārādhanaṁ param. "My dear Pārvatī, amongst all kinds of different types of worship, Viṣṇu worship is the best." And then again he said, tasmāt parataraṁ devi: "And there is still better worship." What is that? Tasmāt parataraṁ devi tadīyānāṁ samarcanam. Then... "Viṣṇu worship is the best. And more than that: to worship Vaiṣṇava." Tadīyānāṁ samarcanam.
So therefore... Here also the same thing: sa eva sādhuṣu kṛtaḥ. Begin. The spiritual life begins from the association of sādhu, or devotee. You cannot progress a pinch only without the mercy of sādhu.