And warn [whomever thou canst reach, beginning with] thy kinsfolk,93
 - Mohammad Asad
A believer is morally obliged to preach the truth to all whom he can reach, but obviously he must begin with those who are nearest to him, and especially those who recognize his authority.
Admonish your close relatives
 - Muhammad Farooq-i-Azam Malik
And warn 'all, starting with' your closest relatives,