How do we know that Christ must be all for our salvation?

The necessity of Christ as all in our salvation is rooted deeply in the teachings of scripture. He is described as the beginning, center, and end of all that we hope for in terms of redemption. The Bible calls us to rest entirely on Him, indicating that our salvation is not only initiated by Him but also sustained and perfected in Him. When believers realize their spiritual poverty and insufficiency, they are reminded to turn to Christ, who fulfills every need and does not chastise them.