Jhn 5:22 For the Father judgeth no man, but hath committed all judgment unto the Son:
Since the Father doesn't separate anyone, he rather has given the separation of all to the Son.
Remember, the Jewish word for "holy" (kedosh) means "separate" and holiness (kedushah) means "separateness." This separateness is, on one hand, a separation for the common, ordinary things of life and, on the other hand, a separate level of reality, the spiritual plane invisible to the material world.
this is relevant because the two key words here, translated as "judge" and "judgment" mean primarily "to separate" and "separation." The act of judging was the act of distinguishing, separating one type of thing from another. This means separating the material from the spiritual.
Interestingly, the word translated as "judgment" is "krisis," which is the basis of our English word "crisis." The idea is that a krisit is a decision point and a separation point, where thing can go one of two different ways.
Christ has more to say about this process of judgment and the mistakes people make about it in Jhn 16:11.
κρίνει (3rd sg pres ind act) "Judgeth" is from krino, which primarily means "to separate", "to put asunder," and "to distinguish." It has a lot of other secondary meanings, including "to pick out", "to choose", "to decide" disputes or accounts, "to win" a battle, "to judge" especially in the sense of "estimate", "to expound," or "to interpret" in a particular way.