What was Jesus’ purpose in coming to earth?
To bring man into Oneness with Him
Joh 17:18 as Thou didst send me to the world, I also did send them to the world;
Joh 17:19 and for them do I sanctify myself, that they also themselves may be sanctified in truth.
Joh 17:20 ‘And not in regard to these alone do I ask, but also in regard to those who shall be believing, through their word, in me;
Joh 17:21 that they all may be one, as Thou Father art in me, and I in Thee; that they also in us may be one, that the world may believe that Thou didst send me.
Joh 17:22 ‘And I, the glory that thou hast given to me, have given to them, that they may be one as we are one;
Joh 17:23 I in them, and Thou in me, that they may be perfected into one, and that the world may know that Thou didst send me, and didst love them as Thou didst love me.
For this purpose the Son of God was manifested, that he might destroy <loose, break, unloose, destroy, dissolve, put off, melt, break up, break down, annul, subvert, to do away with, to deprive of authority> the works <anything which he undertakes to do>,of the devil.
1John 3:8b
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 2:15 [And] having spoiled principalities and powers, he made a shew of them openly, triumphing over them in it.
Joh 12:31 Now is the judgment of this world: now shall the prince of this world be cast out.
If He had not done that totally and completely then salvation would not have been possible.
But in destroying the devil, He did far more than atone for our sins.
He became a curse for us
Ga 3:10 For as many as are of the works of the law are under the curse: for it is written, Cursed [is] every one that continueth not in all things which are written in the book of the law to do them. 13 Christ hath redeemed us from the curse of the law, being made a curse for us: for it is written, Cursed [is] every one that hangeth on a tree:
Since calamity, disease, plagues and more are the result of sin, then there are results of sin when there is no sin. It may not be our sin, but the sins of others.