1 Corinthians 1:22-25
22 Jews demand signs and Greeks look for wisdom,
23 but we preach Christ crucified: a stumbling block to Jews and foolishness to Gentiles,
24 but to those whom God has called, both Jews and Greeks, Christ the power of God and the wisdom of God.
25 For the foolishness of God is wiser than human wisdom, and the weakness of God is stronger than human strength.
The signs and the wisdom is the evidence people ask for to believe. God will never present such evidence even if it means people will end up in hell. Something God will never do is to violate a human's autonomy. He created logical and FREE beings, not robots. That is what He created human in His own icon means. Human has AUTONOMY. The moment God presents solid proof like many people ask for the autonomy and freedom gets lost. Even if Jesus presents himself in front of someone of those who demand solid proof they might probably say their brain is playing tricks on them,they will not believe. Jesus said in the story with Lazarus and the rich man that even if someone is raised from the fead they will not believe.
That passage means you have to accept first Jesus and the teachings of the Church first and you will find the evidence later. Like the scientists who make an experiment to prove a theory. You want proof? Make the experiment, follow the teachings of the Church and you will find the evidence, the proof you are asking for. The moment you don't follow the teachings of the Church don't say there is not proof.