'Convincing' in the Bible

After He had suffered, He also presented Himself alive to them by many convincing proofs, appearing to them during 40 days and speaking about the kingdom of God.

Now Herod was having an angry quarrel with the people of Tyre and Sidon. So they joined together and presented themselves before him. And after convincing Blastus, the king's personal assistant, to help them, they asked for peace, because their country's food supply was provided by the king's country.

So Paul entered the synagogue and spoke out fearlessly for three months, addressing and convincing them about the kingdom of God.