Theophylact of Ohrid

And there is a difference between a sign and a wonder. A sign is something that is accomplished in accordance with nature, only in an extraordinary manner. Such was the sudden healing of Peter's mother-in-law, who was sick with a fever. Here the healing of the fever is a deed in accordance with nature, but it was accomplished in an extraordinary manner: as soon as Christ touched her, the fever left (Matt. 8:14-15). But a wonder is an action performed upon that which does not occur in accordance with nature. …

Commentary on Romans ↗

Ignatius of Antioch

I have learned that certain of the ministers of Satan have wished to disturb you, some of them asserting that Jesus was born [only ] in appearance, was crucified in appearance, and died in appearance; others that He is not the Son the Creator, and others that He is Himself God over all. Others, again, hold that He is a mere man, and others that this flesh is not to rise again, so that our proper course is to live and partake of a life of pleasure, for that this is the chief good to beings who are in a little while to perish. …

Epistle of Pseudo-Ignatius to the Tarsians ↗

Thomas Aquinas

Hence he adds: by the power of signs, i.e., of minor miracles, such as healing the sick, and wonders, i.e., major miracles, which portend or manifest something great from their grandeur. But all this would be insufficient, unless the Holy Spirit stirred the hearts of their hearers to believe. Hence, it says in Acts that while Peter was speaking the words of faith, the Holy Spirit fell on all who heard the word (Acts 10:44). …

Commentary on Romans ↗