Remember thy Lord inspired the angels (with the message): “I am with you: give firmness to the Believers: I will instil terror into the hearts of the Unbelievers: smite ye above their necks and smite all their finger-tips off them.”
In other words, be men, be strong and fight your enemy with all your might, for God will put the conviction in you to prevail.
Emerick, Yahiya. The Meaning of the Holy Qur’an in Today’s English (p. 829). Unknown. Kindle Edition.