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Why the Blood Must Be the Object of Faith — Not Just a Doctrine You Know

Mike Mahaffey

Most believers acknowledge what the Cross accomplished. Fewer make the blood of Jesus the object of faith in a daily, active sense — trusting the finished work rather than their own effort or emotional state. That distinction is where the Holy Spirit either has room to work or does not.

What Does It Mean to Make the Blood of Jesus the Object of Your Faith?

Romans 3:25 does not say God set forth Christ as a propitiation generally. It says propitiation comes “through faith in his blood.” The preposition is doing real work. Faith must land somewhere. It must have an object. And the object Paul names is specific: the blood.

Operative faith — faith that is actually functioning — is different from knowing the facts. A believer can know every theological category the Cross produced: redemption, justification, propitiation, reconciliation. He can recite the doctrines in order. And his faith can still be resting somewhere else entirely.

Doctrinal knowledge becomes operative faith when it moves from the head into a daily, conscious resting of weight. The Cross is not a file in memory. It is a resting point. Those are not the same thing.

Why Did Paul Keep Coming Back to Christ Crucified?

Paul did not treat the Cross as the starting line he had left behind. He gloried in it continuously.

For I determined not to know any thing among you, save Jesus Christ, and him crucified. (1 Corinthians 2:2)

But God forbid that I should glory, save in the cross of our Lord Jesus Christ. (Galatians 6:14)

The word “glory” in Galatians is present tense. This was Paul’s sustained resting point — not a memory of where he began, but the thing he was resting on right now. He did not move on from the Cross into more advanced territory. He moved deeper into it.

This is the pattern Scripture establishes. The Cross is not the entry point of the Christian life. It is the ongoing basis of it.

What Happens When a Believer Knows the Doctrine but Moves the Object?

The Galatian churches are the clearest case study in the New Testament. Paul does not accuse them of abandoning the Cross. He accuses them of relocating their faith — placing it in circumcision rather than in Christ and Him crucified.

O foolish Galatians, who hath bewitched you, that ye should not obey the truth, before whose eyes Jesus Christ hath been evidently set forth, crucified among you? This only would I learn of you, Received ye the Spirit by the works of the law, or by the hearing of faith? Are ye so foolish? having begun in the Spirit, are ye now made perfect by the flesh? (Galatians 3:1-3)

The Galatians had seen the Cross set forth plainly. They were not ignorant. The failure was relocation. They began in the Spirit — meaning they received the Spirit by faith in Christ crucified — and then moved their faith to the law as the basis for going further.

The modern equivalents are exact. Measuring standing with God by how well the last week went. Treating the blood as what got you in but not what keeps you. After moral failure, returning to self-effort and self-correction instead of returning to the Cross. These are not different errors from the Galatian one. They are the same error in different clothing.

How Does Faith in the Blood Actually Work on a Daily Basis?

Paul gives the operating principle in Colossians 2:6-7:

As ye have therefore received Christ Jesus the Lord, so walk ye in him: rooted and built up in him, and stablished in the faith, as ye have been taught, abounding therein with thanksgiving. (Colossians 2:6-7)

The method of receiving is the method of walking. The same act of faith that brought the believer in is the same act of faith that carries the believer forward. There is no second method for daily sanctification.

Hebrews makes the daily application explicit:

Having therefore, brethren, boldness to enter into the holiest by the blood of Jesus, by a new and living way, which he hath consecrated for us, through the veil, that is to say, his flesh; and having an high priest over the house of God; let us draw near with a true heart in full assurance of faith. (Hebrews 10:19-22)

The boldness to enter is present tense. The blood of Jesus as the basis of access to the Father is not a one-time transaction that settled the matter at conversion. It is the daily, living ground on which a believer approaches God right now. The writer of Hebrews urges the believer to draw near — present, active, ongoing — with full assurance grounded in what the blood accomplished.

This is not striving. Striving is what happens when faith has moved off the blood and onto self. Resting is what happens when faith stays where Paul placed it — in His blood.


For a broader look at what this finished work produces in daily life, see what the blood does now.

What Does Rightly Placed Faith Produce?

When faith rests on Christ and Him crucified, the Holy Spirit has latitude to work. This is the consistent testimony of Scripture. The Spirit was received by the hearing of faith, not by works of the law. He operates on the same basis. A believer who has returned to performance as the ground of his standing has, practically speaking, taken the Holy Spirit’s operating basis away.

Rightly placed faith produces rest — not passivity, but the settled confidence of a person who knows the weight is on finished work, not on his next performance. It produces access, not earned entry. The difference between a believer living in defeat and a believer walking in freedom is rarely effort level. It is almost always the object faith is resting on.

After failure, the answer is not to work harder. After a dry season, the answer is not to manufacture more feeling. After doubt, the answer is not to produce more certainty. The answer in every case is the same resting point: the blood of Jesus, the finished work of the Cross, Christ and Him crucified — not as a doctrine to review but as the ground to stand on right now.

About Mike & This Site

With 40 years of navigating the ups and downs of the Christian walk, Mike Mahaffey writes about pursuing a deeper, moment-by-moment relationship with Jesus Christ. This site explores Scripture through the lens of the Cross—offering an open invitation to join him in going deeper into the Word.

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