"They know God's justice requires that those who do these things deserve to die, yet they do them anyway. Worse yet, they encourage others to do them, too," (Romans 1:32).
You must not be flippant toward warnings of sin and God's judgement. They are real. There is an expressed standard you will be held up to, which cannot be met without the perfect salvation of Jesus the Christ.
Would you ignorantly drive drunk down a road lined with police cars, waving off any warnings to the contrary? Would you walk happily off a cliff even though everyone around you is screaming that you are approaching the edge? Common sense would be an obvious no to both. The treatment of your soul is no different. You are surrounded by warnings about sin and divine justice, of the Hell sin reserves you. Do not ignore them!
To use the name of God as a byword is a sin. Who has not done this? You have been conditioned to think this harmless (certainly nothing compared to lust, theft or murder!), but I promise you something even as seemingly insignificant as this is still a transgression of the expressed standard. Sin is sin, no matter how great or small, and the consequence of the least and greatest is the same: sin equals severance equals Hell. If you allow sin to lull you into your grave, you welcome ruin! It's as simple as that.
Acknowledge the sin that even now stains your soul, dooms you like a cancer. Without the perfection of the crucified and resurrected Christ, we have no chance. The Law God has given will condemn each and every one of us, for if a single thought is a transgression, who can survive judgement?
"For whoever keeps the whole law and yet stumbles at just one point is guilty of breaking all of it," (James 2:10-11).