Of course; even the sin of lying can be covered by the blood of Jesus.
However, don't think that God will respect your person because you think that you are a Christian...
Col 3:25, But he that doeth wrong shall receive for the wrong which he hath done: and there is no respect of persons.
The reality is that those who are truly redeemed have been made into new creatures in Christ (2 Corinthians 5:17 (kjv))...so the following is true of them (in larger letters).
Pro 13:5, A righteous man hateth lying: but a wicked man is loathsome, and cometh to shame.
We know that John specifies what he means in Revelation 21:8 when he says the following.
Rev 22:15, For without are dogs, and sorcerers, and whoremongers, and murderers, and idolaters, and whosoever loveth and maketh a lie.
This obviously applies to those who think that they are Christians as well as to those who know that they are not.
You just throw verses around out of context, But what you are really saying by your own words is you are really not a true Christian you are just an accuser Of Christians, Only God and the individual know if they are Saved its no-one elses business, but by your own words and Judgment you expose and trap yourself, Don't you see that