There’s plenty of evidence. But my point is greater than that: why should it matter? Few of us can ever hope to bring as much glory to God as did he.
There are very good reasons for proclaiming saints, if there were none, then we wouldn’t have a Church, let alone a single saint.
There is “no Glory to God” if Jesus never changed anyone’s life, this is the reality of his mission. A death and resurrection which reached no one is meaningless.
Because we have examples of personal faith, we can say that there is something concrete about that faith.