Q:

My father once said to me, “If I can't trust my people, then I don't want to be doing this." 

• 1
  His father once told him that if he couldn't trust his people then he didn't want to be doing this.
• 2
  My father once told me that if he couldn't trust his people then he didn't want to be doing that.
• 3
  My father told him that if he couldn't trust my people then he didn't want to be doing that.
• 4
  My father once told me that if he couldn't trust his people then he didn't want to be doing this.