Revelation 10:6

The Hebrew word for "to swear" is šāḇaʿ (שבע), Strong's H7650. It is etymologically linked to the Hebrew word for "seven" (šeḇaʿ, שֶבע, Strong's H7651). The connection reflects an ancient practice of making oaths by invoking the number seven, symbolizing completeness, literally meaning "sevening oneself" in the sense of repeating something seven times to confirm an oath or promise.