There are many obstructive elements. To protect the self from these obstacles, one needs the armour of protection which does not get influenced by hurdles.
"Arahante saranam pavajjami Siddhe saranam pavajjami Sahu saranam pavajjami
Kevali pannattam dhammam saranam pavajjami".
Meaning I take refuge in the Omniscient I take refuge in the Liberated ones I take refuge in the Saints
I take refuge in the religion propounded by Omniscient.