Question: There is a person called … who claims he was an RSS worker till he found a reference in the vedas that said that Jesus was the only true prophet and all others were false. He is now a christian and is propagating this. Any comments?

There is no reference to Jesus in the Vedas. There is a single reference to him found in the Bhavishya Purana, which states his mission was to establish dharma. The Vedas never say there is only one prophet. On the contrary the Vedas establish that there are unlimited saints, rishis, yogis, drashtas, and avataras, who all come to reestablish the principles of religion:

ekam sad vipra bahudha vadanti

“There is one Absolute Truth, but the learned speak of Him in various ways.”

This is the conclusion of the Vedas.