Lesson of 2nd Passover: Pray for Moshiach Now!

The theme of the 2nd Passover on 14 Iyar (May 19 in 20’19) is that it is never too late. It is always possible to put things right. Thus we should pray every day for Moshiach to come now!

A Passover festival was observed at Mount Sinai

Why was a 2nd Passover granted a year after the Exodus?