That we may bear fruit unto God !
Rom 7:4
4 Wherefore, my brethren, ye also are become dead to the law by the body of Christ; that ye should be married to another, even to him who is raised from the dead, that we should bring forth fruit unto God.
Another accomplishment of the Death of Christ in the Purpose of God, is that it will cause all for whom He died and was raised from the dead for, to bring forth fruit unto God. That fruit being both faith and repentance, repentance toward God and Faith in Jesus Christ Acts 20:21
21 Testifying both to the Jews, and also to the Greeks, repentance toward God, and faith toward our Lord Jesus Christ.
Both of these are but fruits of Christ's Death and Resurrection 1 Pet 1:3 !
Remember when Jesus said this Jn 12:24
Verily, verily, I say unto you, Except a corn of wheat fall into the ground and die, it abideth alone: but if it die, it bringeth forth much fruit.
Well that is the fruit unto God Paul means here in Rom 7:4, which fruit consisteth of many men and women for whom Christ died, manifest both Faith and Repentance.
John the Baptist said to the Pharisee, questioning them about why they came to His Baptism of Repentance, but first they must bring forth fruit unto Repentance Matt 3:7-8
7 But when he saw many of the Pharisees and Sadducee's come to his baptism, he said unto them, O generation of vipers, who hath warned you to flee from the wrath to come?
8 Bring forth therefore fruits meet for repentance:
This fruit would manifest itself in confession of sin Matt 3:6
6 And were baptized of him in Jordan, confessing their sins.
However the Pharisees and Sadducee's that John directed his words to did not consider themselves sinners as other men much like the Pharisee here Lk 18:11-12
11 The Pharisee stood and prayed thus with himself, God, I thank thee, that I am not as other men are, extortioners, unjust, adulterers, or even as this publican.
12 I fast twice in the week, I give tithes of all that I possess.
You see the Pharisee did not consider those things he did works of darkness or sinful deeds of the flesh, but in reality thats what they were Jn 3:19
19 And this is the condemnation, that light is come into the world, and men loved darkness rather than light, because their deeds were evil.
Their religious deeds were nothing but dead works that needed to be repented of Heb 9:14
14 How much more shall the blood of Christ, who through the eternal Spirit offered himself without spot to God, purge your conscience from dead works to serve the living God? See also Isa 64:6.
Now this is how Christ Glorifies His Father, by those He died for bringing forth fruit Jn 15:8
8 Herein is my Father glorified, that ye bear much fruit; so shall ye be my disciples.
And this is the end and accomplishment of the Death of Christ or the Body of Christ Rom 7:4
4 Wherefore, my brethren, ye also are become dead to the law by the body of Christ; that ye should be married to another, even to him who is raised from the dead, that we should bring forth fruit unto God.