Most parents want to 'shelter' their children 'from' pain and sadness. [=to prevent their children from experiencing pain and sadness]
They 'found/took shelter' in a cave during the storm. [=they went into a cave to get out of the storm]
They were accused of 'sheltering' a criminal. [=giving a criminal a place to hide]
(..) it's turning ugly. They're commoners, Alfrid. They've always been ugly. It's not my fault they live in a place... ...that stinks of fish oil and tar. Jobs, shelter, food. It's all they ever bleat about. It's my belief, sire, they are being led on by troublemakers. MASTER". (..)2013 The Hobbit: The Desolation of Smaug