As he approached his death, Peter announced in 2 Peter 1:12-18 his purpose of ensuring that Christians would always be able to recall the truths of the gospel.
As Paul headed towards Jerusalem, he took with him fruit from his ministry among the nations.
Jesus fulfilled the entire Old Testament by suffering, rising from the dead, and having forgiveness preached to all the nations.
Instructions to slaves and masters orient all Christians toward commitment and service to the Lord Jesus.