"[14] "Splinters and Stones" was described as having "striking vocal modification and pulsing bass samplings" while containing personal lyrics.

[15] Wonder was announced as a surprise album in May 2017, alongside its cover art, release date and track listing.

[14] Hillsong United also toured Israel to promote Empires, where they debuted "Wonder" alongside several new songs.

[15][16] "Wonder" and "Splinters and Stones" were released as instant-grat singles for those who pre-ordered the album, and the two songs were also available for streaming.

[26] The band was also announced as part of the line-up of the 2017 Outcry Festival at Toyota Stadium in Frisco, Texas.