His leadership of NZCMS has revitalised its response to the sending of mission partners around the world, dramatically increased the numbers serving overseas, and involved a significant number of young people in mission initiatives.
From there he was recruited as the National Director of NZCMS. class="MsoNormalMaina first went to New Zealand in 2006.
class="MsoNormalHe had met the previous head of NZCMS at a conference, who invited him to speak at the New Zealand society's mission conference.