Acts 26:22-23
22. To this day I have had the help that comes from God, and so I stand here testifying both to small and great, saying nothing but what the prophets and Moses said would come to pass: 23. that the Christ must suffer and that, by being the first to rise from the dead, he would proclaim light both to our people and to the Gentiles.”

I like this verse because it shows us how Paul proclaimed the gospel of Christ only with the help of God. We cannot be effective in our testimony without God's help. And he also reminds us that Christ had to suffer and die in order to rise again, and in order to proclaim the light to the world. It's all tied together.