"For a Jew, any Jew, to encourage devout Christians to explore the so-called Hebraic roots of Christianity or to advance any movement associating Christians with the lost 10 tribes is nothing short of playing with fire.  It shouldn't be done in the name of interfaith reconciliation, as an attempt to second-guess biblical prophecy, or as a means to encourage tourism, commerce and/ or settlement in Eretz Yisrael. 

It is the height of irresponsibility and deception for a Torah observant scholar or rabbi to engage in such endeavors. One wonders if such spiritual leaders have lost their grounding and  are perhaps suffering from a type of messianic complex."