“Sabbath of complete rest.” The Hebrew is shabbath shabbathon, more literally, “a Sabbath of Sabbath observance.” This is to be understood as a Sabbath in which there is Sabbath observance, or a Sabbath of complete rest (cp. “complete rest,” CJB; HCSB; NAB; NET; NLT). This Hebrew phrase occurs six times in the Bible: Exodus 31:15, 35:2; Leviticus 16:31; 23:3, 32, and here in Leviticus 25:4.