Exodus 20:8-11 establishes the seventh-day Sabbath as a unique twenty-four hour period of holy, sanctified time, a memorial of the completion of physical creation, when God established the pattern of resting. God gave the Sabbath (the most frequent of all holy days) as a blessing for man, which, if kept correctly, guarantees a period of rejuvenating rest, a relief from stress, and a prophylactic against heart disease, mental illness, and a boost to general health. In addition, the Sabbath gives an opportunity for God's called-out ones to recharge their spiritual batteries, strengthening their relationship with their Creator. The Sabbath is a sign and a perpetual covenant to His people (Exodus 31:12-17) that they will forever remember what God did, permanently setting apart His chosen family. The Sabbath is a unique blessing for those who have the faith to delight in, cherish, and use it for spiritual growth (Isaiah 58:11-14).