Attempting to address the matter with a video campaign filmed in various Spanish towns and cities, he talks to various teenagers and 20- and 30-somethings about their faith.

And Bishop Munilla puts the secular nature of Spain's youth down to 'lack of affection' and 'lack of education'.

Given the 'emergency' and 'urgent need' for 'greater evangelisation' of Spain's young adults, Bishop Munilla says religious leaders should try to speak the same language as young people to take the 'stuffiness' out of the church and 'encourage enthusiasm' during 'this time of great secular thought'.

He says the lack of faith seen in Spain is aggravated by the 'social, moral and economic crisis'.

“The video campaign shows the suffering caused by the absence of religious faith,” the Bishop explains.

“Jesus Christ is an unknown quantity for many young Spaniards, largely due to a lack of affection and their low level of education.”