No, Roman Catholicism has the serious err, and is called "antichrist", vicarius christi, for it.
1Jn_2:18 Little children, it is the last time: and as ye have heard that antichrist shall come, even now are there many antichrists; whereby we know that it is the last time.
1Jn_2:22 Who is a liar but he that denieth that Jesus is the Christ? He is antichrist, that denieth the Father and the Son.
1Jn_4:3 And every spirit that confesseth not that Jesus Christ is come in the flesh is not of God: and this is that spirit of antichrist, whereof ye have heard that it should come; and even now already is it in the world.
2Jn_1:7 For many deceivers are entered into the world, who confess not that Jesus Christ is come in the flesh. This is a deceiver and an antichrist.
They deny the sinful (fallen) flesh nature in Jesus' humanity, as per Rom. 8:3:
Rom 8:3 For what the law could not do, in that it was weak through the flesh, God sending his own Son in the likeness of sinful flesh, and for sin, condemned sin in the flesh:
Rom. 8:3; Gal. 4:4; Heb. 2:16-17; (not like angelic nature, unfallen celestial flesh; Jud. 1:7; 1 Cor. 15:39-40), but 2 Cor. 5:21.
This only refers to the human flesh nature of Jesus, not His spirit / mind / heart, for "flesh" and "spirit" are not the same thing, as per Jhn. 3.
Joh 3:6 That which is born of the flesh is flesh; and that which is born of the Spirit is spirit.
Consider carefully the two things:
Luk_1:35 And the angel answered and said unto her, The Holy Ghost shall come upon thee, and the power of the Highest shall overshadow thee: therefore also that holy thing which shall be born of thee shall be called the Son of God.
Gal_4:4 But when the fulness of the time was come, God sent forth his Son, made of a woman, made under the law,
All mankind since the fall of Adam, have come in the likeness of sinful (fallen) flesh:
Rom_1:3 Concerning his Son Jesus Christ our Lord, which was made of the seed of David according to the flesh;
David's flesh and Jesus' flesh were both sinful (fallen) flesh:
Psa 51:5 Behold, I was shapen in iniquity; and in sin did my mother conceive me.
See this chart:
Pages 88-89 - Godhead - The Eternal Heavenly Trio : Free Download, Borrow, and Streaming : Internet Archive
or here - Flesh And Spirit of Jesus Christ Chart : Free Download, Borrow, and Streaming : Internet Archive
Having sinful flesh is not to be a sinner. To sin (1 Jhn. 3:4; Rom. 7:7,14; Jam. 2:8-13) is to be a sinner. Sin is not simply existing / being in sinful (fallen) flesh.
As stated before, Jesus was without sin (no question), but Jesus' human nature, his human flesh, could not be unfallen (like the angelic hosts in their unfallen celestial flesh) and still be subject to death, but came "in the likeness of sinful (fallen) flesh" (Rom. 8:3).
Jesus redeemed fallen mankind, by being victorious over the fallen nature. He had sinful (fallen) flesh and chose not to sin, even unto death, the death of the Cross.
Joh_16:33 These things I have spoken unto you, that in me ye might have peace. In the world ye shall have tribulation: but be of good cheer; I have overcome the world.
Rev_3:21 To him that overcometh will I grant to sit with me in my throne, even as I also overcame, and am set down with my Father in his throne.
The words are "even as" (G5613). Jesus is the "example" (1 Pet. 2:21) not just the "propitiation" for mankind. Jesus, demonstrating in the sinful (fallen) flesh that it is possible to be an overcomer, as He was, by the Holy Ghost. Jesus was born of the Holy Ghost in sinful (fallen) flesh, and a Christian is also born of the Holy Ghost, by being born again from above, and yet lives in the same sinful (fallen) flesh, and so can have the same victory in the here and now as Jesus did then, and one does not need to wait until the flesh is changed at the second coming. The latter reasoning grants no victory in the here and now, and places sin as victorious until Jesus returns, but that is not what Jesus promised!
Yes, Jesus took on "human nature", but there are two kinds of such as mentioned in scripture that take place before translation / glorification:
1. the sinless (unfallen) flesh of Adam the first
2. the sinful (fallen) flesh of Adam the first after he had sinned
So, which option of "human nature" does the Bible say Jesus took?
Rom 8:3 For what the law could not do, in that it was weak through the flesh, God sending his own Son in the likeness of sinful flesh, and for sin, condemned sin in the flesh:
Rom 8:4 That the righteousness of the law might be fulfilled in us, who walk not after the flesh, but after the Spirit.
1Pe_4:1 Forasmuch then as Christ hath suffered for us in the flesh, arm yourselves likewise with the same mind: for he that hath suffered in the flesh hath ceased from sin;
1Pe_3:18 For Christ also hath once suffered for sins, the just for the unjust, that he might bring us to God, being put to death in the flesh, but quickened by the Spirit:
They follow the Lamb withersoever He goeth (Rev. 14:4).
You say, "He is God and God does not have a sinful nature.", yet He is also man (human, mankind), and in that second nature taken upon Himself, He took sinful (fallen) flesh:
1Ti_3:16 And without controversy great is the mystery of godliness: God was manifest in the flesh, justified in the Spirit, seen of angels, preached unto the Gentiles, believed on in the world, received up into glory.
Rom_9:5 Whose are the fathers, and of whom as concerning the flesh Christ came, who is over all, God blessed for ever. Amen.
Php 2:5 Let this mind be in you, which was also in Christ Jesus:
Php 2:6 Who, being in the form of God, thought it not robbery to be equal with God:
Php 2:7 But made himself of no reputation, and took upon him the form of a servant, and was made in the likeness of men:
Php 2:8 And being found in fashion as a man, he humbled himself, and became obedient unto death, even the death of the cross.
Heb_2:14 Forasmuch then as the children are partakers of flesh and blood, he also himself likewise took part of the same; that through death he might destroy him that had the power of death, that is, the devil;
Col_1:22 In the body of his flesh through death, to present you holy and unblameable and unreproveable in his sight:
So, why focus only on the God part and not the second part, the sinful (fallen) flesh human nature part?
Another reason that Roman Catholicism needs to reject this, is because of their "Transubstantiation" doctrine, and they do not want to believe they eat sinful (fallen) flesh.
Away with your blasphemy. Christ did not have a sinful nature.
Christ had human nature not a sinful nature.
You need to repent of this, seriously.
