Call to Worship — Thomas Bwalya, Zambia Call to worship Be exalted O God above the heavens. Let your glory be over all the earth. All: Come, let us worship our God. I invite you all dear, parents, brothers and sisters to stand with me and sing hymn number _____ as we open our service. Thomas Bwalya is a ministry student United Church of Zambia University, Mindolo. This Call to Worship was written for morning devotions held daily in the University Chapel.