'Conviction' in the Bible

while the Apostles with great force of conviction delivered their testimony as to the resurrection of the Lord Jesus; and great grace was upon them all.

His advice carried conviction. So they called the Apostles in, and--after flogging them--ordered them not to speak in the name of Jesus, and then let them go.

Afterwards he went into the synagogue. There for three months he continued to preach fearlessly, explaining in words which carried conviction the truths which concern the Kingdom of God.