The claw hammer has a singular use: drive the nail. The American psychologist, Abraham Maslow, said that when you only have a hammer, every problem looks like a nail. That is, in a good sense, exactly the Christian’s situation.
But Jesus said to him, “Let the dead bury their own dead, but as for you, go and proclaim the kingdom of God.”
Luke 9:60 NET
Jesus does not want volunteers who offer their services (verses 57-58). Nor does he accept people with divided loyalties (verses 61-62). And he certainly doesn’t allow entrance into his service people who don’t know the true work of the Kingdom, that of proclamation.
For the task of Jesus is singular: proclaiming the Kingdom of God. The singular problem is sin. And the Christian has a single tool in his toolbox: the gospel. For this tool, and none other, solves the problem.