John Chrysostom

"Now when they had gone throughout Phrygia and the region of Galatia, and were forbidden of the Holy Ghost to preach the word in Asia," having left Phrygia and Galatia, they hastened into the interior. For, it says, "After they were come to Mysia, they assayed to go into Bithynia: but the Spirit suffered them not." Wherefore they were forbidden, he does not say, but that they were "forbidden," he does say, teaching us to obey and not ask questions, and showing that they did many things as men.

Homily on Acts 34 ↗

Theophylact of Ohrid

"They were not permitted by the Holy Spirit to preach the word in Asia." Why they were forbidden to preach in Asia, he does not say, but that it was forbidden to them, he did say, teaching us thereby to obey and not to demand an account, and showing that often they also acted in a human manner. The Spirit forbids the apostles to preach in Asia and Bithynia, since He foresaw that the inhabitants there would be seized by the heresy of the spirit-fighters.

Commentary on Acts ↗

Oecumenius

In Asia and Bithynia the Spirit forbids the apostles to speak the word, foreknowing that the heresy of those who fight against the spirits will prevail.

Commentary on Acts ↗

Bede

They were forbidden by the Holy Spirit to speak the word in Asia, etc., up to Passing into Macedonia, help us. Truly the Lord is terrible in counsel above the sons of men. One promises to follow the Master in everything and is not allowed; another, commanded to follow, does not get the requested leave for burial of his father. Saul is drawn in, invincible and resisting. …

Commentary on Acts ↗