The Greek adjective leitourgikos means ministering, serving, or related to sacred service. It is the adjectival form of leitourgia and appears once in the New Testament, in Hebrews 1:14.
Leitourgikos appears in the climactic question of Hebrews 1's extended argument for Christ's superiority to angels: 'Are not all angels ministering spirits sent to serve those who will inherit salvation?' (Hebrews 1:14). The entire chapter establishes that Jesus — the Son through whom all things were made — is infinitely superior to angels. The paradox is that the greatest beings in the heavenly realm are defined as leitourgika pneumata — liturgical servants — in relation to the heirs of salvation. If the mightiest angels serve the saints, how much more should believers serve one another! The word redefines greatness: in the kingdom, the exalted serve the seemingly lowly. This directly echoes Jesus' declaration that 'the Son of Man did not come to be served, but to serve' (Matthew 20:28).