See Acts 2:4; 10:46; 19:6; 1 Cor. 12:28; 1 Cor. 14:2-5. During their previous ministry the Twelve had not been given the gift of tongues, for it was not needed. Now that there was a need, the power was bestowed upon them. See on 1 Cor. 14.
Cast out devils.
See Additional Note on Mark 1.
These signs.
That is, supernatural and miraculous demonstrations of divine power (see p. 208). However, valuable as miracles are, it is not too hard to counterfeit them or to get reports of presumed miracles into circulation. These reports tend to confuse the unwary and appeal to the credulous. As a matter of fact, miracles do not constitute the strongest evidence of the genuineness of the gospel (see DA 406, 799). It should be remembered that Jesus Himself consistently refused to perform miracles as signs.