What kind of supernatural miracles does Les say Israel experienced?
The supernatural miracles Israel experienced included angels coming down and delivering God's people, angels opening prison doors to free apostles, and earthquakes so controlled they released prisoners from stocks without killing anyone. That kind of direct angelic intervention, distinctive to Israel, does not happen in Church history and will return when God again deals with Israel.
Les explains that he is not denying God is the God of miracles or that God can still answer prayer and perform the miraculous. The specific supernatural he means is the kind Israel experienced: angels coming in and opening prison doors, and earthquakes so controlled that all the prisoners in stocks were released and none were killed. He says Church history has no account of angels coming down to deliver God's people. That supernatural does not happen now and will not happen until God begins once again to deal with the nation of Israel; then it will come back in foremost and as a daily occurrence. In the Acts account, an angel opens the prison doors and lets the apostles out, and the religious leaders are shaken and wonder how to stop it.