Gevurot Meyruach Hakodesh 16:6-7

And they traveled through the regions of Phrygia and Galatia, having been forbidden by the Ruach Hakodesh to speak the dvar HASHEM in Asia. And having come to the border of Mysia, they were trying to go toward Bithynia, and the Ruach of Moshiach did not permit them.