John Mark
Mark 16:17BSB·traditional attribution

And these signs will accompany those who believe: In My name they will drive out demons; they will speak in new tongues;

John Calvin Reformed @genevareformer

17 And these signs shall follow them that shall believe. As the Lord, while he still lived with men in the world, had ratified the faith of his gospel by miracles, so now he extends the same power to the future, lest the disciples should imagine that it could not be separated from his bodily presence.

Matthew Henry Presbyterian @wholebiblehenry

Here is, I. The conviction which Christ gave his apostles of the truth of his resurrection (Mar 16:14); He appeared to them himself, when they were all together, as they sat at meat, which gave him an opportunity to eat and drink with them, for their full satisfaction; see Act 10:41.

Commenting on Mark 16:14-18

John Gill Reformed Baptist @doctorgill

They shall take up serpents,.... The Arabic version adds, "in their own hands"; and in an ancient manuscript of Beza's it is read, "in the hands"; so the Apostle Paul had a viper, which fastened and hung on his hand, which he shook off, without receiving any harm from it, Act 28:3.