You better believe it. Merely what scripture and Christian experience bear out to be true. That a person is not saved if he is not committed to Christ. The devils also believe, and tremble. This commitment is not a work to merit eternal life.
Salvation is all of grace.
The works are not to earn eternal life, but rather, they show if our faith is genuine saving faith. There seems to be a fundamental misunderstanding among Non-Lordship people regarding salvation. What Lordship people are saying is not that one commits himself to the Lord in order to merit salvation, but rather that when God has truly changed a person, he has new desires, new allegiances, new commitments. At best he believes they are a good idea. There is no dichotomy between Christian discipleship and salvation in the New Testament.