Those were Whelan's words when he appointed Martinez as Latics manager in 2009 and they have inspired considerable loyalty from the Spaniard.
The 39-year-old was reportedly the subject of interest from Aston Villa and Liverpool in the summer but he remains focused on the task of keeping Wigan in the Premier League.
"The support and loyalty Dave Whelan has given me is sadly rare in football," Martinez told The Sun.
"And it's only natural to want to pay back that loyalty. It's impossible for me to ever let him down.
"He told me the day I joined, 'If you get relegated twice, you'll still be the manager and will have to get us out of League One!'
"Last summer was a time for reflection after my first three years here. The chairman himself had to think what he wanted to do next with the club and his position.
"In the end, we both decided we wanted to push Wigan forward and leave a legacy here for the 25 to 30 years."