〜とあれば: if it is for; if that's the case

Says that if a particular situation arises, one is willing to do anything.

Noun/plain form + とあれば + action. The condition is special and demands effort: 友人のためとあれば, 子供のためとあれば. Spoken and written. Showing willingness or determination. Compare 〜なら, a general condition.