When bold

“So they remained for a long time, speaking boldly for the Lord, who bore witness to the word of his grace, granting signs and wonders to be done by their hands.” (Acts 14:3)

The righteous are bold as a lion

“The wicked flee when no one pursues, but the righteous are bold as a lion.” (Prov. 28:1 ESV)

Boldness without hindrance 

“Proclaiming the kingdom of God and teaching about the Lord Jesus Christ with all boldness and without hindrance.” (Acts 28:31 ESV)

Boldness with confidence

“In whom we have boldness and access with confidence through our faith in him.” (Eph. 3:12 ESV)

Filled with the Holy Spirit to speak the Word of God with boldness

“And when they had prayed, the place in which they were gathered together was shaken, and they were all filled with the Holy Spirit and continued to speak the word of God with boldness.” (Acts 4:31 ESV)

Therefore..

“Let us therefore come boldly unto the throne of grace, that we may obtain mercy, and find grace to help in time of need.” (Heb. 4:16 KJV)

“For if what was being brought to an end came with glory, much more will what is permanent have glory. Since we have such a hope, we are very bold.” (2 Cor. 3:11-12)

“Since we have such a hope, we are very bold…” (2 Cor. 3:12 ESV)

“And now, Lord, look upon their threats and grant to your servants to continue to speak your word with all boldness…” (Acts 4:29 ESV)

Quotes:

“His voice leads us not into timid discipleship but into bold witness.” - Charles Stanley

“When we find a man meditating on the words of God, my friends, that man is full of boldness and is successful.” - Dwight L. Moody