as appropriate (required)

Goblet: 5:19 ... that therefore you shall clean (wash) yourselves with water every day as often as the circumstances require; therefore it is recommended to you that you clean (wash) yourselves as appropriate (required) at each need (necessity); therefore clean (wash) diligently (thoroughly/properly) your face and your hands, and also your arms up to the elbows or higher as appropriate (required); ...