The jailer proceeded to wash Paul and Silas" wounds. Then they washed him with the water of baptism. He did not have to keep his prisoners under lock and key, only to deliver them at the required time. He believed they would not try to escape, so he brought them into his house and treated them as loved brothers rather than as law breakers. [source][source][source]
"One of the evidences of true repentance is a loving desire to make restitution and reparation wherever we have hurt others." [1][source]
"The conversion of the jailer is not just one more of the many conversions in Acts but the conversion of a member of the oppressive system that is punishing Paul and Silas." [2][source]