Human nature, that is, what is natural to humans, can be good or bad. It begins good, before the influences of the world take their toll. Christ used the innocence and goodness of infants as an analogy for the righteousness that all humans are capable of.
"18:1 At the same time came the disciples unto Jesus, saying, Who is the greatest in the kingdom of heaven? 18:2 And Jesus called a little child unto him, and set him in the midst of them, 18:3 And said, Verily I say unto you, Except ye be converted, and become as little children, ye shall not enter into the kingdom of heaven [see When Will You Be Judged? and Could Christ Return Tonight?]. 18:4 Whosoever therefore shall humble himself as this little child, the same is greatest in the kingdom of heaven. 18:5 And whoso shall receive one such little child in my name receiveth me. 18:6 But whoso shall offend one of these little ones which believe in me, it were better for him that a millstone were hanged about his neck, and that he were drowned in the depth of the sea. 18:7 Woe unto the world because of offences! for it must needs be that offences come; but woe to that man by whom the offence cometh!" (Matthew 18:1-7 KJV)
But The Messiah also acknowledged that the righteous must be strong in order to survive. Strong in righteousness, not evil - to know the ways of the world in order to understand how not to become entrapped in them.
"10:16 Behold, I send you forth as sheep in the midst of wolves: be ye therefore wise as serpents, and harmless as doves [see Christian Doves]. 10:17 But beware of men: for they will deliver you up to the councils, and they will scourge you in their synagogues; 10:18 And ye shall be brought before governors and kings for my sake, for a testimony against them and the Gentiles. 10:19 But when they deliver you up, take no thought how or what ye shall speak: for it shall be given you in that same hour what ye shall speak. 10:20 For it is not ye that speak, but the Spirit of your Father which speaketh in you." (Matthew 10:16-20 KJV)
"Mortify therefore your members which are upon the earth"
The LORD gave His people the awareness and the knowledge to overcome, not "human nature," but the evil influences upon human nature. Humans are, by nature, just as capable of good, as evil. The Word of God guides us towards the right.
"3:1 If ye then be risen with Christ [see Born Again, How and When?], seek those things which are above, where Christ sitteth on the right hand of God [see What Is Jesus Christ Doing Right Now?]. 3:2 Set your affection on things above, not on things on the earth. 3:3 For ye are dead, and your life is hid with Christ in God [see Spiritual Conception]. 3:4 When Christ, who is our life, shall appear, then shall ye also appear with him in glory [see To Meet The Lord In The Air].
3:5 Mortify therefore your members which are upon the earth; fornication, uncleanness, inordinate affection [see Sodomites], evil concupiscence, and covetousness, which is idolatry: 3:6 For which things' sake the wrath of God cometh on the children of disobedience: 3:7 In the which ye also walked some time, when ye lived in them. 3:8 But now ye also put off all these; anger, wrath, malice, blasphemy, filthy communication out of your mouth. 3:9 Lie not one to another, seeing that ye have put off the old man with his deeds; 3:10 And have put on the new man [see the Fact Finder question below], which is renewed in knowledge after the image of him that created him [see Christ The Creator]: 3:11 Where there is neither Greek nor Jew, circumcision nor uncircumcision, Barbarian, Scythian, bond nor free: but Christ is all, and in all.
3:12 Put on therefore, as The Elect of God, holy and beloved, bowels of mercies, kindness, humbleness of mind, meekness, longsuffering; 3:13 Forbearing one another, and forgiving one another, if any man have a quarrel against any: even as Christ forgave you, so also do ye. 3:14 And above all these things put on charity, which is the bond of perfectness.
3:15 And let the peace of God rule in your hearts [see A Pure Heart], to the which also ye are called in one body; and be ye thankful. 3:16 Let the word of Christ dwell in you richly in all wisdom; teaching and admonishing one another in psalms and hymns and spiritual songs, singing with grace in your hearts to the Lord. 3:17 And whatsoever ye do in word or deed, do all in the name of the Lord Jesus, giving thanks to God and the Father by him."
3:18 Wives, submit yourselves unto your own husbands, as it is fit in the Lord [listen to the sermon The Divorce and Remarriage of Jesus Christ from our Sermons page]. 3:19 Husbands, love your wives, and be not bitter against them. 3:20 Children, obey your parents in all things: for this is well pleasing unto the Lord.
3:21 Fathers, provoke not your children to anger, lest they be discouraged.
3:22 Servants [see Christianos], obey in all things your masters according to the flesh; not with eyeservice, as menpleasers; but in singleness of heart, fearing God: 3:23 And whatsoever ye do, do it heartily, as to the Lord, and not unto men; 3:24 Knowing that of the Lord ye shall receive the reward [see A Reward For Everyone] of the inheritance: for ye serve the Lord Christ. 3:25 But he that doeth wrong shall receive for the wrong which he hath done: and there is no respect of persons." (Colossians 3:1-25 KJV)
Fact Finder: How do we know how to keep "human nature" good?
Fundamentals Of True Christianity: Lesson 1
Fundamentals Of True Christianity: Lesson 2
Fundamentals Of True Christianity: Lesson 3
Fundamentals Of True Christianity: Lesson 4
Fundamentals Of True Christianity: Lesson 5
Fundamentals Of True Christianity: Lesson 6
Fundamentals Of True Christianity: Lesson 7
Fundamentals Of True Christianity: Lesson 8
Fundamentals Of True Christianity: Lesson 9
Fundamentals Of True Christianity: Lesson 10
Fundamentals Of True Christianity: Lesson 11
Fundamentals Of True Christianity: Lesson 12
Fundamentals Of True Christianity: Lesson 13
Fundamentals Of True Christianity: Lesson 14
Fundamentals Of True Christianity: Lesson 15
Fundamentals Of True Christianity: Lesson 16
Fundamentals Of True Christianity: Lesson 17