They are justified before God before they believe because Christ has already purged away their sins by His death or blood
However, as pointed out to you numerous times, Ephesians 1:13 explains the process very succinctly:
Ephesians 1:13 In whom ye also trusted, after that ye heard the word of truth, the gospel of your salvation: in whom also after that ye believed, ye were sealed with that holy Spirit of promise
you trusted after you heard
you believed after you trusted
you were sealed after you believed
You need to align your beliefs with God's Word ...