There is a false boldness for Christ that only comes from pride. A man may rashly expose himself to the world’s dislike and even deliberately provoke its displeasure, and yet do so out of pride… True boldness for Christ transcends all; it is indifferent to the displeasure of either friends or foes. Boldness enables Christians to forsake all rather than Christ, and to prefer to offend all rather than to offend Him.
The hallmark of the preaching which the Spirit effects is “boldness”… As in the Old Testament, when the Spirit fills the servant of God He “clothes himself” with that person, and aspects of the Spirit’s authority are illustrated in the courageous declaration of the Word of God. This boldness appears to involve exactly what it denotes: there is freedom of speech. We catch occasional glimpses of this in the Acts of the Apostles. What was said of the early New England preacher Thomas Hooker becomes a visible reality: when he preached, those who heard him felt that he could pick up a king and put him in his pocket!
The Greek word translated bold is which means to be courageous, daring, dauntless.It speaks of acting without fear of the consequences.
One of the special marks of the Holy Ghost in the Apostolic Church was the spirit of boldness.