"Sheathe the sword" is a familiar expression meaning to put an end to hostilities and disagreements. This phrase can be substituted with an array of synonyms to convey the same meaning effectively. Some alternatives include "lay down arms," "call a truce," "cease fire," "make peace," "end conflict," and "bury the hatchet." Each of these phrases is commonly used in place of "sheathe the sword" to promote peace and harmony. A language user should choose the phrase that fits the context of the situation and the audience to communicate the intended meaning concisely and precisely.