"At that time people began to call upon the name of the LORD" (Genesis 4:26 ESV).
From this first mention of prayer in the Bible, right through to the end, when the church prays "Come, Lord Jesus!" (Revelation 22:20), prayer is intimately linked with the gospel - God's promised and provided solution to the problem of human rebellion against Him and its consequences.
After defining prayer simply as "calling on the name of the Lord," Gary Millar follows the contours of the Bible's teaching on prayer. His initial focus is on how "calling on the name of the Lord" to deliver on His covenantal promises is the foundation for all that the Old Testament says about prayer. Moving to the New Testament, he shows how this is redefined by Jesus Himself, and how, after his death and resurrection, the apostles understood "praying in the name of Jesus" to be the equivalent new covenant expression.