relieve, have mercy
恤 centers on compassionate relief: showing mercy by alleviating suffering or distress. The given meanings of relieving and having mercy are two sides of the same caring response.
恤 combines 忄 (heart) with 血 (blood), suggesting a heart moved by the sight of blood or suffering, leading to mercy and relief. The exact historical development is uncertain, but the component relationship is plausible.
The heart radical 忄 beside 血 (blood) paints a scene of a compassionate heart responding to blood or injury: relieving pain and showing mercy.
For ジュツ, imagine a merciful doctor saying 'Jutes?' (sounds like ジュツ) while offering relief to a bleeding patient. The invented word 'Jutes' cues ジュツ and ties to the heart-and-blood shape.