The seventh-day Sabbath (Saturday) is a divine gift of rest and fellowship established at Creation. While other time cycles rely on astronomy, the seven-day week is uniquely rooted in God's design. The Bible designates Saturday as the holy Sabbath, a practice upheld by Jesus, His disciples, and early believers alike. Sunday worship was introduced later through cultural and political shifts. Despite these historical changes, God's original invitation to rest and connect with Him remains unchangeable.