These Christian believers were warned before
and now are being warned again by Paul.
16 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, 20 idolatry, sorcery, hatred, contentions, jealousies, outbursts of wrath, selfish ambitions, dissensions, heresies, 21 envy, murders, drunkenness, revelries, and the like; of which I tell you beforehand, just as I also told you in time past, that those who practice such things
will not inherit the kingdom of God. Galatians 5:16-20
These scriptures are not referring to Christians under grace. Gal 5:21 and envy; drunkenness, orgies, and the like. I warn you, as I did before, that those who live like this will not inherit the kingdom of God.
Gill's Exposition of the Entire Bible -
http://biblehub.com/galatians/5-21.htm
and that they which do such things, shall not inherit the kingdom of God; by which is meant the heavenly glory, called a "kingdom", because of the grandeur and magnificence of that state; and "of God", because it is of his preparing and giving, what he calls his own to by his grace, and puts them into the possession of and where he reigns and will reign for ever, and show forth the glory of his majesty:
this is possessed in way of inheritance, which shows it to be a bequest of our heavenly Father's,
a free grace gift of his, and not to be obtained by the works of the law, or merits of men; but what belongs, and is peculiar to the children of God, who are so by adopting grace: now they that do such works of the flesh as before enumerated; that is, that live in the commission of these things, whose whole lives are employed in such work, living and dying in such a state, without repentance towards God and faith in Christ, shall never enjoy eternal life and happiness; though such who have done these things,
being brought to a sense of them, and to the blood and righteousness of Christ for pardon and justification,
for life and salvation; such, notwithstanding the works of the flesh done by them, shall, through the free grace of God, and the propitiatory sacrifice of Christ, inherit the kingdom and glory of God.
There is only one kingdom, either you inherit it or not. We're only believing once here...
Eph 1:13-14 Eph 1:13-14 And you also were included in Christ when you heard the message of truth, the gospel of your salvation. When you believed, you were marked in him with a seal, the promised Holy Spirit, 14who is a
deposit guaranteeing our
inheritance until the redemption of those who are God’s possession—to the praise of his glory.
Our
inheritance is guaranteed through the promised Holy Spirit. We inherit the kingdom once we come to faith and accept Jesus as Savior Rom 10:9 and Luke 17:21.