Our bodies / temples were designed with the same inherent nature as the animals. By this I mean that we have all the same basic instincts as any animal which was put in place as an automated system to protect the individual and the family.
These genetically controlled instincts are the things that give us urges that do not and cannot conform to God's will. They will always be with us until we die and thus we will always be susceptible to the sin of following their urges and desires.
Christ was born of the flesh and his flesh had the same instinctual urges as any other man as we can see here;
Hebrews 4:15 For we have not an high priest which cannot be touched with
the feeling of our infirmities; but was in all points tempted like as we are, yet without sin.
Hebrews 2:
14Forasmuch 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;
15And deliver them who through fear of death were all their lifetime subject to bondage.
16For verily he took not on
him the nature of angels;
but he took on him the seed of Abraham.
17Wherefore in all things it behoved him to be made like unto his brethren, that he might be a merciful and faithful high priest in things pertaining to God, to make reconciliation for the sins of the people.
18For in that he himself hath suffered being tempted, he is able to succour them that are tempted.
Christ who like ourselves was tempted in 3 respects:
1) lust of the flesh --hunger -turn stones into bread-
2) lust for power -- control-- -have all the kingdoms of the world-
3) pride -- test God-- -jumping from a cliff-
Christ IS the example for every man who says sin can't be resisted..... Christ IS the example for every man who has the spiritual desire to overcome the natural urges of the body. Christ is the example that proves to all men that you can beat the nature of the beast that is part of each of us and you can do it with God's helper that can let you know when to just say no.
If a man asserts that they cannot stop sinning then they are denying that Christ was made like us. They would by default be asserting that Christ didn't do it by his own free will.
Who is not able of their own free will to have no other gods before God in mind and deed?
Who is not able of their own free will to not make any graven images and serve them in mind and deed?
Who is not able of their own free will to not take the name of the Lord thy God in vain in mind and deed?
Who is not able of their own free will to keep the seventh day Sabbath holy in mind and deed?
Who is not able of their own free will to Honour thy father and thy mother in mind and deed?
Who is not able of their own free will to not kill in mind and deed?
Who is not able of their own free will to not commit adultery in mind and deed?
Who is not able of their own free will to not kill in mind and deed?
Who is not able of their own free will to not steal in mind and deed?
Who is not able of their own free will to not bear false witness in mind and deed?
Who is not able of their own free will to not covet in mind and deed?
All these things and more Christ did of his own free will choice as an example for us to follow;
1 Peter 2:21 For even hereunto were ye called: because Christ also suffered for us,
leaving us an example, that ye should follow his steps: 22 Who did no sin, neither was guile found in his mouth: 23 Who, when he was reviled, reviled not again; when he suffered, he threatened not; but committed himself to him that judgeth righteously...