Exodus 19 shows how the Old Testament Sinai Covenant parallels with New Testament themes and events. The Passover, the crossing of the Red Sea, and the provision of manna are connected with New Testament concepts such as Christ's sacrifice, baptism, and the Eucharist.

God's actions in delivering Israel from Egypt are seen as a prefiguration of Christ's work in delivering believers from sin. The covenant at Sinai is presented as God's gracious act of establishing Israel as His treasured possession, contingent on their obedience. This is connected to the Abrahamic covenant, showing continuity in God's plan.

The idea that Christians are now the true "kingdom of priests and a holy nation," is explored as Peter applies these Old Testament descriptions to the New Testament church. The concept of continuity and discontinuity between the Old and New Covenants is stressed, with Moses as a precursor to Jesus, who fulfills and transcends the Old Covenant through His life, death, and teachings, such as the Sermon on the Mount.