Verses with the word arm in the New Testament (4 verses):

Luke 1:51
He hath shewed strength with his arm; he hath scattered the proud in the imagination of their hearts.

John 12:38
That the saying of Esaias the prophet might be fulfilled, which he spake, Lord, who hath believed our report? and to whom hath the arm of the Lord been revealed?

Acts 13:17
The God of this people of Israel chose our fathers, and exalted the people when they dwelt as strangers in the land of Egypt, and with an high arm brought he them out of it.

1 Peter 4:1
Forasmuch then as Christ hath suffered for us in the flesh, arm yourselves likewise with the same mind: for he that hath suffered in the flesh hath ceased from sin;