מַשִּׂיגֵ֣הוּ חֶ֭רֶב בְּלִ֣י תָק֑וּם חֲנִ֖ית מַסָּ֣ע וְשִׁרְיָֽה׃
If one lay at him with the sword, it will not hold; nor the spear, the dart, nor the pointed shaft.
Read kabbalistic (mystical) interpretation of Job 41:18: and classical mystical sources.