Bible Theasaurus

Believer (26 instances)
Convert (9 instances)
Devotee (1 instance)
Worshiper (8 instances)
Worshipper (15 instances)

Reverse Interlinear

Strong's
Root Form
Definition
Usage
πιστεύω 
Pisteuo 
believe , commit unto , commit to trust , be committed unto , be put in trust with , be commit to one's trust , believer
Usage: 163

πιστός 
Pistos 
Usage: 51