Without

1. Without the Supreme Lord's blessings one cannot obtain the association of a pure devotee, and 
2. Without his association one cannot obtain the right understanding to reach the spiritual world to see the Lord.

Moment

eka ghadi adhi ghadi adhi ki puni adhi
tulasi sangati sadhu ki harai koti aparadha

1. One moment, or 
2. half a moment's, or 
3. even one half of a half of a moment's 

association with a real devotee can remove millions of offenses from a person and bring them to the platform of liberation. Such is the potency of a pure devotee's association.