Try the Greek: leitourgia/leitourgikos, etc. Sometimes it's translated as "ministry" or some such. Here are some references.
From Greek it went to Latin whence it came into English liturgy/liturgical. Perfectly biblical word.
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Minister (Noun and Verb) [Noun]
leitourgos denoted among the Greeks, firstly, "one who discharges a public office at his own expense," then, in general, "a public servant, minister." In the NT it is used
(a) of Christ, as a "Minister of the sanctuary" (in the Heavens), Heb_8:2;
(b) of angels, (Heb_1:7 Psalm_104:4);
(c) of the Apostle Paul, in his evangelical ministry, fulfilling it as a serving-priest, Rom_15:16; that he used it figuratively and not in an ecclesiastical sense, is obvious from the context;
(d) of Epaphroditus, as ministering to Paul's needs on behalf of the church at Philippi, Php_2:25; here, representative service is in view;
(e) of earthly rulers, who though they do not all act consciously as servants of God, yet discharge functions which are the ordinance of God, Rom_13:6.