Paul Anderson-Walsh made the comment after a report from University College London said that pensioners with a sense of meaning and purpose lived on average two years longer than those who didn't.
The study analysed more than 9000 people with an average age of 65, and also said those who felt what they were doing was worthwhile were 30 per cent less likely on average to die within a decade than those who felt this the least.
He told Premier's News Hour: "Our seniors are the greatest and the most unused resource in the entire Christian community.
"What our seniors have is real wisdom capital, and we're just not making good use of that.
"They have time, they have interest, they have the actual wisdom.
"We've got young people in the church, we've got young married couples in the church, we've got people starting businesses in the church.
"If only our senior people were able to have access to them that they might share their time and wisdom with them.
"That would give them purpose and meaning, I think."
Mr Anderson-Walsh also said that a key part of having a sense of meaning and purpose was to find self-esteem and value in who you are as a person, and not what you do for a living.
