The two criminals on the cross were criminals

Let us, then, observe what was the faith of this transgressor, as it appeared in the expression of it. No difference filled his mind, or took place in his thoughts, but rhat immense one betwixt himself, a sinner of the vilest class, and the perfections of righteousness shining forth in a person of the highest dignity, under the severest trials. This is the proper point of view at which sinful men come to the knowledge of the true God. To this point was Paul, that eminent guardian of virtue and holiness, reduced, when he became a Christian. - Robert Sandeman, Letters on Theron and Aspasio