When Jesus therefore had received the vinegar, He said, It is finished: and He bowed His head, and gave up the ghost. – John 19:30

I am He that liveth, and was dead; and, behold, I am alive for evermore, Amen; and have the keys of hell and of death. Revelation 1:18

The means by which the soul is pardoned is found in the precious blood of Jesus; the cause of its obtaining spiritual life at first is found in Christ’s finished work; and the only reason why the Christian continues still to live after he is quickened, lies in Jesus Christ, who liveth and was dead and is alive for evermore. When I first come to Christ, I know I must find all in Him, for I feel I have nothing of my own; but all my life long I am to acknowledge the same absolute dependence; I am still to look for everything in Him. ” I am the vine, ye are the branches: he that abideth in Me, and I in Him, the same bringeth forth much fruit: for without Me, ye can do nothing.” the temptation is after we have looked to Jesus and found life there to fancy that in future time we are to sustain ourselves in spiritual existence by some means within ourselves, or by supplies extra and apart from Christ. But it must not be so; all for the future as well as all for the past is wrapped up in the person and the work of the Lord Jesus. Because He died, ye are pardoned; because He lives, ye live; all your life still lies in Him who is the way, the truth, and the life…Do let us recollect this, that we are not saved because of anything that we are, or anything that we do; and that we do not remain saved because of anything we are or can be. A man is saved because Christ died for him, and he continues saved because Christ lives for him. The sole reason why the spiritual life abides is because Jesus lives. This is to get upon a rock, above the fogs which cover all things down below. If my life rests on something within me, then to-day I live, and to-morrow I die; but if my spiritual life rests in Christ, then in my darkest frames-ay, and when sin has most raged against my spirit- still I live in the ever-living One, whose life never changes. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0968.cfm