The Hebrew terms relating to integrity (tom, tum·mahʹ, tam, ta·mimʹ) have the root meaning of that which is “complete” or “whole.” (Compare Le 25:30; Jos 10:13; Pr 1:12.) Ta·mimʹ is used several times to refer to physical completeness, or soundness, and freedom from impairment, for example, regarding sacrificial animals. (Ex 12:5; 29:1; Le 3:6) But more frequently these terms describe moral soundness or blamelessness.

When applied to God, ta·mimʹ may properly be translated “perfect,” as in describing Jehovah’s activity and works, his way, knowledge, and law. (De 32:4; Job 36:4; 37:16; Ps 18:30; 19:7) All these divine qualities and expressions manifest such unmatchable completeness and fullness, are so sound and free from defect, or fault, that they clearly identify their Source as the one true God.​—Ro 1:20; see PERFECTION.

But mainly these related Hebrew terms describe unswerving devotion to righteousness. Biblical usage and examples emphasize unbreakable devotion to a person, Jehovah God, and to his expressed will and purpose as the course of vital importance.