Are there billboards in Israel saying to prepare for the Messiah?
Yes. Along Israel's highways there are large yellow billboard signs in Hebrew that, in substance, call people to prepare for the coming of the Messiah. Some Jews are aware that events are being set for their Messiah, though they view it as His first coming, not recognizing Christ.
Les explains that as you go up and down the highways of Israel, there are big yellow billboard signs in Hebrew that, in so many words, say to prepare for the coming of the Messiah. He notes that some Jews are suddenly aware that everything is being set for their Messiah to come. They do not look at it as believers do, as a return, but as His first coming, because they do not recognize Christ as Messiah. They realize the signs of the times are building so rapidly that Israel should be ready for her Messiah. Les connects this to the coming of the King of kings and to the study of Revelation. He also relates it to the verse 22 promise that God will make them one nation with one king, cleanse them, and be their God—something not yet fulfilled.