tn The imperfect tense could be translated “you shall keep” as a binding command; but the obligatory nuance (“must”) captures the binding sense better.
tn Heb “my covenant.” The Hebrew word בְּרִית (bérit) can refer to (1) the agreement itself between two parties (see v. 7), (2) the promise made by one party to another (see vv. 2–3, 7), (3) an obligation placed by one party on another, or (4) a reminder of the agreement. In vv. 9–10 the word refers to a covenantal obligation which God gives to Abraham and his descendants.