Diatithemai is one of the New Testament's most theologically loaded verbs, built from dia- ('through') and tithemai ('to place, arrange'), literally meaning to dispose or arrange things deliberately. In five of its seven occurrences, it carries the technical, covenantal sense of 'making' or 'establishing' a covenant — the diatheke from which it derives its force. God tells Israel 'I will make a new covenant' (Heb 8:10; 10:16, quoting Jeremiah 31), Peter reminds Jerusalem of 'the covenant which God made with your fathers' (Acts 3:25), and the Hebrews argument turns on the fact that where a testament exists, the death of the one who made it must be established (Heb 9:16-17). Spanish pactar, French disposer, and German verordnen all reach for legal-contractual vocabulary. But at the Last Supper, Jesus uses the verb in a distinct, royal sense: 'I assign to you, just as my Father assigned to me, a kingdom' (Luke 22:29). Here the verb shifts from covenant-making to sovereign bestowal — a king granting dominion to his heirs.