Porta Coeli

This abandoned 'cortijo' was used many years ago as a residence for elderly people.
This could be read at their main gate then:
PORTA COELI - Residencia para la tercera edad
(HEAVEN'S GATE - Elderly people's home)

Every time I went past it I wondered how they were so sure that all those elderly people living in the 'residencia' were going to end up in heaven??