Luke 11:29 and when the people were gathered thick together,  he began to say, this is an evil generation: they seek a sign, and there shall no sign be given it, but the sign of Jonas the prophet

Revelation 1: 8, 11, 21:6, 22:13 I am Alpha and Omega.

What is the sign of Jonas and what is the Gematria of Alpha and Omega combined.