Jesus is speaking to the crowd, so "you" is plural. Jesus uses this phrase to emphasize the truth of the surprising thing he is about to say next. (See: [[rc://en/ta/man/jit/figs-you]])
"among those to whom a woman has given birth." This is a metaphor that refers to all people. Alternate translation: "of all the people who have ever lived" (See: [[rc://en/ta/man/jit/figs-metaphor]])
The spiritual state of people in the kingdom of God will be higher than that of the people before the kingdom was established. Alternate translation: "has higher spiritual status than John" (See: [[rc://en/ta/man/jit/figs-explicit]])