To purposely sin, is a slap in Christ's face

We are saved by grace, our salvation is only the first step in our walk with Christ. Once we have excepted HIS gift of life, do we again step back into sin, thus telling HIM how much we think HIS sacrifice as our Passover lamb, is like dung to us?

Once we have tasted of HIS grace, to purposely turn back into that sin HE forgave us of, is a slap in the face to Christ.

HIS grace is HIM not cutting us off, as soon as we slip into sin. HIS grace leads us to repentance when we do slip. HIS grace has been turned into a license to sin, when we refuse to follow what HE gave us as a means to live righteous lives.

When we turn again, and purposely sin, John tells us about those:

1Jn 3:8 He that committeth sin is of the devil; for the devil sinneth from the beginning. For this purpose the Son of God was manifested, that he might destroy the works of the devil.
1Jn 3:9 Whosoever is born of God doth not commit sin; for his seed remaineth in him: and he cannot sin, because he is born of God.
1Jn 3:10 In this the children of God are manifest, and the children of the devil: whosoever doeth not righteousness is not of God, neither he that loveth not his brother.

How can we know what is righteousness, without knowing HIS rules for us?

So, what do we do with verses like these? Do we tear them from our Bibles?
1Pe 4:18 And if the righteous scarcely be saved, where shall the ungodly and the sinner appear?
and then in 1st John.
1Jn 3:4 Whosoever committeth sin transgresseth also the law: for sin is the transgression of the law.

We are told to purify ourselves. But how do we purify ourselves, if we don't know HIS rules?
Jn 3:3 And every man that hath this hope in him purifieth himself, even as he is pure.

HE gave us the Holy Spirit, which gives us the power to overcome sin.

The LAW is good, when we use it lawfully. It does not save us. Nor does it sanctify us. Instead it points us toward Christ. It shows us what sin is, according to HIM. And when that light is shined upon that sin, HIS blood forgives us, when we repent.

For those who refuse to follow Christ, that same LAW condemns them.

This same LAW condemns those who once tasted of HIS grace, but chose instead to follow the lusts of their flesh.