In the Greek Scriptures the word dyʹna·mis, “power,” is rendered “powerful works,” “ability,” “miracle.”—Mt 25:15; Lu 6:19; 1Co 12:10, AT, KJ, NW, RS.
... When Christianity was young, miracles worked in conjunction with the message to help individuals to see that God was behind Christianity and had turned from the earlier Jewish system of things. (Heb 2:3, 4)