Written by Bieber, Josh Gudwin, Sonny Moore, Michael Tucker and Theron Feemster, the song was produced by Skrillex and Blood.

It shows Bieber on lush mountainsides, gazing at nature from a cliff's edge, and skateboarding on top of a broken-down airplane.

[7] "I'll Show You" was written by Justin Bieber, Josh Gudwin, Sonny Moore, Michael Tucker and Theron Feemster, with production being done by Skrillex and Blood.

[11] For Bianca Gracie of Idolator, "[the] brooding tune picks up where the R&B-flecked 'Journals' left off,"[12] while Carolyn Menyes of Music Times noticed that the song is "notably more down-tempo than his previously released Purpose cuts 'What Do You Mean?'

'"[13] During the track, Bieber uses a "suave yet hurt croon",[10] as well as "lower, calmer, sturdier, and delicately cradled by Skrillex's glass-case-of-emotion production,"[14] having an emotional,[15] rich, deep tone.

"[14] Menyes noted that the song has "introspective" lyrics, "go[ing] a little bit deeper into his struggles with depression and his public image,"[13] which can be seen on the pre-chorus: "Sometimes it's hard to do the right thing / When the pressure's coming down like lightning / It's like they want me to be perfect / When they don't even know that I'm hurting.

"[14] Sam C. Mac of Slant Magazine opined that the song "takes an Owl City-worthy ballad and beefs it up [...] completing 2015's most empirically perfect singles rollout.

"[11] Caroline Sullivan of The Guardian noted that the song "is drenched in icy reverb,"[18] while Bianca Gracie of Idolator pointed out that "[i]t is Bieber in his rawest form.

Club praised Skrillex's production for "inject[ing] life into 'Purpose', citing the " tropical-forest electro mist" song as an example.

[19] Carolyn Menyes of Music Times observed that "the lightness and vulnerability in Bieber's vocals help to balance that out and bring in a human element.

"[20] Alex Macpherson of The National called it "all languid, stretched-out bass until an oddly weedy synth riff hoves into earshot to function as the hook.

[29] The video features Bieber "running through lush, green mountains, sitting on the edge of a cliff, rolling down hills and skateboarding on top of a derelict airplane.