Another reason singing plays a prominent role in Scripture is that all three persons of the Trinity are connected with song. Zephaniah 3:17 says that the Father will exult over His people ‘with loud singing.’ Jesus sings with His disciples after the Last Supper, and most likely sang every week as He attended synagogue (Matt. 26:30; Luke 4:16). In Hebrews, these words from Psalm 22 are placed in Jesus’ mouth: ‘In the midst of the congregation I will sing Your praise’ (Heb. 2:12). Singing psalms, hymns, and spiritual songs is tied to being filled with the Holy Spirit in such an integral way that it can be hard to determine which is the cause and which is the effect (Eph. 5:19). God wants us to sing because He sings.
— Bob Kauflin, True Worshipers: Seeking What Matters to God, Kindle Location 1244.