In the Bible we find the glory of God’s partnership with man. Throughout the redemptive story, God refuses to do anything without human partnership. He validates human processes and uses human beings. He sometimes waits long periods of time in order to labor with us. At the same time, He gives us assignments that require His own supernatural intervention. One one hand, He does His work through us, on the other hand we cannot do His work without His power. It is the glory of God’s partnership with man and Abraham’s struggle to have a son illustrates the pattern of how God works with man.
The author of Hebrews repeatedly demonstrates how Jesus is better in every way from what was available before. In light of what has come in Jesus, the author also gives believers several specific exhortations that each begin with “let us…” These statements are the author’s instructions on how we should respond to what has come in Jesus.