In a video released on Wednesday and shot in Aleppo, Syria, the Islamist, reportedly from North Rhine-Westphalia, attacks Merkel.
The German jihadist, who has the name Abu Dauoud al-Almani, first rants against the US and President Barack Obama, before turning his attention to his homeland.
“The same to you O Germans and to filthy Merkel who gave gifts to Israel”
He then calls for his “brothers” in Germany, Austria and Switzerland to join jihad.
“We are waiting for you. We have been waiting for this meeting for over 1,400 years,” he adds, calling for Nato to send troops to Syria and Iraq so Isis can fight them.
A transcript of the nine-minute video entitled “Wait. We Too Are Waiting” was produced by jihad monitoring group SITE.
According to the Welt newspaper, the German in the video is a Muslim convert called Michael N.
He used to live in Gladbeck, North Rhine-Westphalia and joined Salafist circles there before heading to the Middle East.
Welt reported that he frequently preached at a mosque in the western German town of Solingen, a hotbed for Salafism, whose followers believe in an extreme form of Islam.
He then travelled from Germany to Egypt with his wife and on to Syria.
He appears in the video alongside British and French jihadists.