The only time I've ever seen a dead body in person is at a funeral, but I'm pretty sure if I saw someone who had been dead for hours, certain signs would clue me that they were dead. No, I don't mean "No pulse" or "Not breathing" because the person might have had something happen within a few minutes of me finding them in that state and could possibly be revived. I mean something more obvious, like blue skin, blueish lips--you know, things that let you know the body hasn't gotten oxygen in a good, long time. I'm pretty sure most people would not have to be told that a person in that condition isn't coming back from it.
So, when we read the following passage in Colossians 2:13
And you, who were dead in your trespasses and the uncircumcision of your flesh,
God made alive together with him, having forgiven us all our trespasses, (ESV)
and this one in Ephesians 2:1
And you were dead in the trespasses and sins (ESV)
we should realize that dead doesn't mean sick, or about to die, not does it suggest that people can be resuscitated by religion but they need to be resurrected by a Savior. Our attempts to use church programs, man centered evangelistic strategies, gimmicks, or feel good self help will not lead anyone to a right relationship with God. They're as foolish as trying to do CPR on a corpse that is cold to the touch with blueish skin. It's only when we preach gospel that people can know what they must do to be saved. We must prech that God is holy but mankind is sinful. However, because God is so merciful and so kind, He decided to send Jesus, His Son, to live a fully obedient life without any sin. God sent His Son to the cross where Jesus suffered the punishment for sin that we deserve. Because He was our Substitute, if we have faith that He died on the cross and rose again for our sin and we repent of our sin, God will save us. He will save anyone who repents of their sins and trusts Christ.
Have you done that? Do you realize you are a sinner? Do you want to be freed from your sin? Trust that Christ died and rose again and repent--call out to God and tell Him you've done this and He will save you. He will resurrect you from spiritual death and make you spiritually alive.