The blood of Jesus is much more powerful than that. You believe it is very weak indeed if you don't know that the blood of Jesus takes away all desire to sin in the present and the future, making it have nothing major to forgive at all. Did Christ sin while on earth? That is how He made us to have the same divine nature that He did, making us brethren in His likeness. Romans 8:29; 1 John 3:5; 2 Peter 1:2-4
CL, you are not understanding the difference between being made to be sin-LESS, as opossed to our attempts of being sin-FREE.
By the holy (set apart) Blood of Christ's
Sacrifice, He is the Mediator for us, as well as for the Father. Through Him, we are made to be sin-less before the Father.
Iows, the Father required the Sacrificial shed Blood of Jesus as much as we do, for our restoration back to Himself, from the condemnation of eternal death.
Hence the words of John the Baptist: "Behold, the Lamb OF God, that takes away [removes] the sin of the world".
In the moment of our repentance (
metanoia) towards the Father, through faith in Christ, we are immediately forgiven of all sins (made to be holy) and are made ready to receive the Gift of His Holy Spirit, which SEALS (saves, secures) us unto the day of redemption. Romans 8:8-9.
The Holy Spirit is the vehicle by which Christ's Righteousness is imputed to us through faith. This is revealed in the parable of the "Pharisee and the Publican" Luke 18:10-14.
From the point of our faith in Christ, for the forgiveness of sin, there is no sin, past, present or future that is not forgiven, except one, the blasphemy against the Holy Spirit. Matthew 12:31.
However, in this now, our flesh and blood existence, through faith "we have this treasure in earthen vessels", being made to be "partakers of the divine nature" 2 Corinthians 4:7.
A "partaker" is not in the full possession of the Gift offered, but is allowed to "taste" beforehand of that which shall be fully given, which will be in the day of our redemption into the Immortality of His likeness. 2 Peter 1:4; 1 Peter 2:3.
Therefore, the blood of Christ is very powerful. It forgives us of all sin, that is common to man, of which makes us to be righteous by/with God's Righteousness deposited within us, through the vehicle of the Holy Spirit, and not that of the Law. Mark 3:28-29