The devotee is called punya-sloka. As one becomes purified by chanting the holy name of the Lord, so one can become purified simply by chanting the name of a holy devotee. The pure devotee of the Lord and the Lord Himself are non different. It is sometimes feasible to chant the name of a holy devotee. This is a sanctified process.
Srimad Bhagvatam 3.28.18