"Now as He drew near, He saw the city and wept over it, saying, 'If you had known, even you, especially in this your day, the things that make for your peace! But now they are hidden from your eyes'" (Luke 19:41-42). Do we see "the things that make for our peace?" Or are are we blind to such things?
The Jews were given so much, especially in the time that Jesus referred to -- "this your day." Jesus lived with them and walked among them. He taught them, and He did miracles and healed the sick. God gave incredible signs and wonders that they might believe. And yet Jesus wept for them, because they had not seen and believed. He stood over the city of Jerusalem, the name which means city of peace, and He wept.
When Jesus wept for those in Jerusalem, He wept for the sin of the world -- past, present and future. He knew that both the Romans and the Jews in this city, God's city, would reject Him. Jesus said, "If you had known, even you, especially in this your day."