[3][4][5] When discussing the song's lyrics in an interview with JD Doyle of Queer Music Heritage in April 2013, Fishel said: ""Testament" is about all the influences that can shape who you are as a person, and make you confused or question your place in the world...all these voices that are constantly coming at you from everywhere as you're growing up, whether it's your parents or your school, or religious teachers telling you who you can be, who you should be, what you [ought to] do with your life.

I wrote "Testament" as both a protest song against 'The Establishment' - against out-dated rules, tradition and the old-fashioned notion of what it is to be 'normal' - and also as a celebration of sexuality, freedom and personal liberation.

Accidental Bear described "Testament" as "a song of empowerment, encourages you to raise freedom flags and celebrates falling in love...How refreshing to hear something that is more rocking and less clubby.

"Testament" could easily be a Green Day song, with frantic guitars, frenetic beats and a style of vocal delivery usually associated with the lead singers of the best indie bands",[12] adding "it really is very good indeed."

UK arts blog The Kaje said that "Testament" had "a throbbing sexuality oozing both from the track and the stunningly compiled Arno video....with Fishel demonstrating a versatility that really kicks into gear and gets the heartbeat pounding.

"[13] British actor Tom Hiddleston tweeted about the song and video shortly after the release, calling Fishel "a man of many talents".