The Gospel in the Piano Keyboard?

There are three periods of time of the witness to the gospel, introduced by understanding the number seven and the seventh day rest in the Scriptures. At the end of the first period of time, Noah sent out the dove, a type of the Holy Spirit, and it came back with nowhere to rest. The second period of time began after the sign of the first seven days. The dove came back with an olive leaf. Noah received knowledge from this period of time. The third period of time began after the sign of the ...