These shortened forms of hymnic versions of the Lord’s Prayer are symptomatic of our modern age, which is impatient with hymns longer than three or four stanzas and with services of worship that last longer than fifty-nine minutes. But worship and prayer require time if we are to become attuned to what we are doing and why. Luther and his generation have much to teach us about hymns that have more to do with faith, rather than simply evoking feeling, hymns that are sometimes expressions of prayer, instead of always being thought of as expressions of praise, hymns that make us take time in worship and prayer to consider who God is, what God has done for us, what God continues to do for us, and what our real needs — as opposed to our wants — are. The catechesis of prayer not only defines what prayer is but also expresses itself in prayer, which is what Luther’s catechism hymn on the Lord’s Prayer takes time.
Robin A. Leaver. Luther’s Liturgical Music: Principles and Implications. Lutheran Quarterly Books. Grand Rapids & Cambridge: Eerdmans, p. 133–4