Pete Postlethwaite was 60 in The Omen when he played the character 'Father Brennan'.
That was over 18 years ago in 2006.
In 2011 he died aged 65, starring in 79 films in his career, 12 of those after The Omen was first released. If he were alive today he would be 79.
In The Omen, I think Pete Postlethwaite looks: