Ephesians 6:17

New English Translation

¹⁷And take the helmet of salvation^[a] and the sword^[b] of the Spirit (which is the word of God).

Ephesians 6:17 sn An allusion to Isa 59:17.
Ephesians 6:17 sn The Greek term translated sword (μάχαιρα, machaira) refers to the Roman gladius, a short sword about 2 ft (60 cm) long, used for close hand-to-hand combat. This is the only clearly offensive weapon in the list of armor mentioned by the author (he does not, for example, mention the lance [Latin pilum]).

New English Translation (NET)