'Keep' in the Bible

Pure and unblemished religion [as it is expressed in outward acts] in the sight of our God and Father is this: to visit and look after the fatherless and the widows in their distress, and to keep oneself uncontaminated by the [secular] world.

and one of you says to them, “Go in peace [with my blessing], [keep] warm and feed yourselves,” but he does not give them the necessities for the body, what good does that do?