Zechariah 8:4-6

4, 5. During the early postexilic period the inhabitants of Jerusalem were few in number (Nehemiah 11:1 ff.); in the new era this will change, for Jerusalem will again swarm with inhabitants (compare Zechariah 2:1 ff.).

Old men and old women Long life is a divine blessing (Exodus 20:12; Psalms 91:16; Isaiah 65:20), which will be enjoyed by many in the new age.

Staff… for very age Extreme old age will compel them to lean upon staves (compare Isaiah 36:6).

Boys and girls playing The wealth of children also is an indication of the divine favor (Psalms 127:3; Psalms 128:3). Free from care and surrounded by peace and prosperity they will joyfully spend their youth. Promises of this nature would have a peculiar significance in those days, in view of the fact that those who returned from exile appear to have been chiefly persons in the full strength of manhood. 6. Jehovah will surely fulfill the promise, though it may seem incredible. A free rendering of 6a would bring out the thought more clearly, “Though that which shall take place in those days may seem too wonderful to the remnant of this people.”

The remnant of this people Those of the present generation who will live to see the fulfillment of the promises.

In these days Points to the time in the future when the promises contained in Zechariah 8:4-5 will be fulfilled.

Should it also be marvelous in mine eyes? The question presupposes a negative answer. Though the people may think it incredible, there is no limit to the divine power and resources.