Steve Ray has a list of 35 loaded Questions for "Bible Christians" (quotation marks his)(link to the whole list). This is number 26/35. I'm trying to provide the answers in a common format, for easy reference.
26) How could the Apostle Thomas establish the church in India that survives to this day (and is now in communion with the Catholic Church) without leaving them with one word of New Testament Scripture?
1) Whether Thomas himself actually evangelized India is a question that is open to debate.
2) There's no reasonable basis for Steve Ray to claim that Thomas didn't bring any New Testament Scripture with him.
3) The Indian Orthodox church (also known as the Malankara Orthodox Syrian Church) uses the so-called Liturgy of St. James. That liturgy includes the reading of the gospels.
4) The Malankara church was out of communion with Rome for centuries (whether it is now in full communion is an interesting question in itself). Taking Steve Ray's claim in that regard for granted, however, why does their experience suddenly become relevant now, simply because they are now communing with Rome? In other words, isn't it odd for Steve Ray to point to a church that was apart from communion with Rome as though it were an example of authentic Christianity (given Steve Ray's own beliefs)?