Romans 10:10

For with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation.

For with the heart man believeth unto righteousness - the righteousness of justification,

And with the mouth confession is made unto salvation. This confession of Christ's name, especially in times of persecution, and whenever obloquy is attached to the Christian profession, is an indispensable test of discipleship. In those who have not the courage to make such confession are meant by the "fearful."