Your greatest adversary is:

Galatians 5:16-19

I say then: Walk in the Spirit, and you shall not fulfill the lust of the flesh. 17 For the flesh lusts against the Spirit, and the Spirit against the flesh; and these are contrary to one another, so that you do not do the things that you wish. 18 But if you are led by the Spirit, you are not under the law. 19 Now the works of the flesh are evident, which are: adultery, fornication, uncleanness, lewdness, (NKJV)

The Works of the Flesh & Fruit of the Spirit
 
How do we avoid the first and develop the second? 
 
The only way to deal with the flesh is to crucify it!

Galatians 5:19

Now the works of the flesh are evident, which are: adultery, fornication, uncleanness, lewdness, (NKJV)

Adultery and Fornication = Sexual Immorality

Ephesians 5:3

But among you there must not be even a hint of sexual immorality, or of any kind of impurity, or of greed, because these are improper for God’s holy people. (NIV)

1 Corinthians 6:18

Flee sexual immorality… (NKJV)

1 Corinthians 6:18

Run from sexual sin! (NLT)

Uncleanness

Uncleanness = Impurity

1 Thessalonians 4:7

For God did not call us to uncleanness, but in holiness. (NKJV)

2 Peter 2:10

and especially those who walk according to the flesh in the lust of uncleanness… (NKJV)

Lewdness

Lewdness = Sensuality

“A person who is ready for any pleasure and doesn’t care what people think.”

Jude 1:4

For certain men have crept in unnoticed, who long ago were marked out for this condemnation, ungodly men, who turn the grace of our God into lewdness and deny the only Lord God and our Lord Jesus Christ. (NKJV)

Galatians 5:20

idolatry, sorcery, hatred, contentions, jealousies, outbursts of wrath, selfish ambitions, dissensions, heresies, (NKJV)

Idolatry

Anything I put before my God is an idol
Anything I want with all my heart is an idol
And anything I can't stop thinking of is an idol
And anything that I give all my love is an idol
 
-“Clear the Stage” by Jimmy Needham
 
Colossians 3:5

So put to death the sinful, earthly things lurking within you. Have nothing to do with sexual immorality, impurity, lust, and evil desires. Don’t be greedy, for a greedy person is an idolater, worshiping the things of this world. (NLT)

Sorcery

Greek word for sorcery is “pharmakeia”

Deuteronomy 18:9-14

“When you enter the land the Lord your God is giving you, be very careful not to imitate the detestable customs of the nations living there. 10 For example, never sacrifice your son or daughter as a burnt offering. And do not let your people practice fortune-telling, or use sorcery, or interpret omens, or engage in witchcraft, 11 or cast spells, or function as mediums or psychics, or call forth the spirits of the dead. 12 Anyone who does these things is detestable to the Lord. It is because the other nations have done these detestable things that the Lord your God will drive them out ahead of you. 13 But you must be blameless before the Lord your God. 14 The nations you are about to displace consult sorcerers and fortune-tellers, but the Lord your God forbids you to do such things.” (NLT)

Hatred

Romans 8:7

Because the carnal mind is enmity against God; for it is not subject to the law of God, nor indeed can be. (NKJV)

Contentions

Contentions = Strife, or Discord, or Quarreling

1 Timothy 6:3-5

Some people may contradict our teaching, but these are the wholesome teachings of the Lord Jesus Christ. These teachings promote a godly life. 4 Anyone who teaches something different is arrogant and lacks understanding. Such a person has an unhealthy desire to quibble over the meaning of words. This stirs up arguments ending in jealousy, division, slander, and evil suspicions. 5 These people always cause trouble… (NLT)

Jealousy

James 3:13-16

If you are wise and understand God’s ways, prove it by living an honorable life, doing good works with the humility that comes from wisdom. 14 But if you are bitterly jealous and there is selfish ambition in your heart, don’t cover up the truth with boasting and lying. 15 For jealousy and selfishness are not God’s kind of wisdom. Such things are earthly, unspiritual, and demonic. 16 For wherever there is jealousy and selfish ambition, there you will find disorder and evil of every kind. (NLT)

James 4:1-3

What is causing the quarrels and fights among you? Don’t they come from the evil desires at war within you? 2 You want what you don’t have, so you scheme and kill to get it. You are jealous of what others have, but you can’t get it, so you fight and wage war to take it away from them. Yet you don’t have what you want because you don’t ask God for it. 3 And even when you ask, you don’t get it because your motives are all wrong—you want only what will give you pleasure. (NLT)

Outbursts of Wrath

Proverbs 14:17

A quick-tempered man acts foolishly… (NKJV)

Ephesians 4:31

Get rid of all bitterness, rage, anger, harsh words, and slander, as well as all types of evil behavior. (NLT)

Colossians 3:8

…get rid of anger, rage, malicious behavior… (NLT)

Galatians 5:21

…those who practice such things will not inherit the kingdom of God. (NKJV)