-- do not take the name of the Lord God in vain --- Exodus 20:7
-- the Lord will not hold him guiltless that takes his name in vain --- Exodus 20:7
-- you shall not take the name of the Lord your God in vain --- Deuteronomy 5:11
-- the Lord will not hold him guiltless that takes his name in vain --- Deuteronomy 5:11
-- give me neither poverty nor riches, lest I be full and deny thee --- Proverbs 30:7-9
-- give me neither poverty nor riches, lest I be poor and steal, and take the name of my God in vain --- Proverbs 30:7-9
-- Not every one that says to me, Lord, Lord, shall enter into the kingdom of heaven --- Matthew 7:21
-- many will say to me in that day, Lord, Lord, and I will say to them, I never knew you --- Matthew 7:22-23
-- parable of those which trusted in themselves that they were righteous, were not --- Luke 18:9-12
-- parable of those which pleaded for mercy as sinners were justified --- Luke 18:13-14
-- do not keep company if they call themselves Christian but do not live it --- 1 Corinthians 5:9-11
-- do not even eat with those who call themselves Christian but do not live it --- 1 Corinthians 5:9-11
-- know that the unrighteous shall not inherit the kingdom of God --- 1 Corinthians 6:9-11

Exodus 20:7 KJV
[7] Thou shalt not take the name of the Lord thy God in vain; for the Lord will not hold him guiltless that taketh his name in vain.

Deuteronomy 5:11 KJV
[11] Thou shalt not take the name of the Lord thy God in vain: for the Lord will not hold him guiltless that taketh his name in vain.

Proverbs 30:7-9 KJV
[7] Two things have I required of thee; deny me them not before I die: [8] Remove far from me vanity and lies: give me neither poverty nor riches; feed me with food convenient for me: [9] Lest I be full, and deny thee, and say, Who is the Lord? or lest I be poor, and steal, and take the name of my God in vain.

Matthew 7:21-23 KJV
[21] Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven. [22] Many will say to me in that day, Lord, Lord, have we not prophesied in thy name? and in thy name have cast out devils? and in thy name done many wonderful works? [23] And then will I profess unto them, I never knew you: depart from me, ye that work iniquity.

Luke 18:9-14 KJV
[9] And he spake this parable unto certain which trusted in themselves that they were righteous, and despised others: [10] Two men went up into the temple to pray; the one a Pharisee, and the other a publican. [11] The Pharisee stood and prayed thus with himself, God, I thank thee, that I am not as other men are, extortioners, unjust, adulterers, or even as this publican. [12] I fast twice in the week, I give tithes of all that I possess. [13] And the publican, standing afar off, would not lift up so much as his eyes unto heaven, but smote upon his breast, saying, God be merciful to me a sinner. [14] I tell you, this man went down to his house justified rather than the other: for every one that exalteth himself shall be abased; and he that humbleth himself shall be exalted.

1 Corinthians 5:9-11 KJV
[9] I wrote unto you in an epistle not to company with fornicators: [10] Yet not altogether with the fornicators of this world, or with the covetous, or extortioners, or with idolaters; for then must ye needs go out of the world. [11] But now I have written unto you not to keep company, if any man that is called a brother be a fornicator, or covetous, or an idolater, or a railer, or a drunkard, or an extortioner; with such an one no not to eat.

1 Corinthians 6:9-11 KJV
[9] Know ye not that the unrighteous shall not inherit the kingdom of God? Be not deceived: neither fornicators, nor idolaters, nor adulterers, nor effeminate, nor abusers of themselves with mankind, [10] Nor thieves, nor covetous, nor drunkards, nor revilers, nor extortioners, shall inherit the kingdom of God. [11] And such were some of you: but ye are washed, but ye are sanctified, but ye are justified in the name of the Lord Jesus, and by the Spirit of our God.

Taking the Lord's name in vain is more than just using God's name as a swear word.

Do not be a hypocrite, saying you are a Christian and then not living it.

1 Corinthians 5:11 KJV
[11] But now I have written unto you not to keep company, if any man that is called a brother be a fornicator, or covetous, or an idolater, or a railer, or a drunkard, or an extortioner; with such an one no not to eat.

Do not take the Lord's name in vain, saying you are a Christian then breaking one or more of the Ten Commandments.

Proverbs 30:7-9 KJV
[7] Two things have I required of thee; deny me them not before I die: [8] Remove far from me vanity and lies: give me neither poverty nor riches; feed me with food convenient for me: [9] Lest I be full, and deny thee, and say, Who is the Lord? or lest I be poor, and steal, and take the name of my God in vain.