How should we share the Gospel with coworkers? I believe I should mention sin, that ALL have sinned and are hellbound, that there is no other way to be saved than through Christ, and that we can't "work" our way or somehow earn our way into Heaven, and that Christ is THE ONLY WAY to be redeemed. And then prepare to be HATED because most will not like this message.
You have the gospel backwards. There is no point talking about sin
as sin to someone who is slave to the flesh and devoid of the Holy Spirit.
The mind governed by the flesh is death, but the mind governed by the Spirit is life and peace. The mind governed by the flesh is hostile to God; it does not submit to God’s law, nor can it do so.-- Romans 8
When you are talking to someone who is ruled by the flesh about sin, it's as though you're trying to teach a pig to sing. But it's not your job to convict them of sin:
When He comes, He will convict the world about sin, righteousness, and judgment -- John 16
It's the job of the Holy Spirit to convict sinners of their sin. People who are lost are being wooed by the Holy Spirit. If their hearts are softened to receive the gospel, you only have to speak in the voice of Jesus:
My sheep recognize my voice; I know them, and they follow me. -- John 10
The sheep here in the voice of Jesus that which they need, even though they may not consciously be aware of what they need.
Look at how Jesus presented Himself to the Samaritan woman. He first offered her what she most needed as she understood it. He only mentioned her sin
after she had accepted what He offered, which at that point she was able to receive.
He did the same thing with Zaccheus, offering Zaccheus first what Zaccheus did not have--fellowship--and then dealt with Zaccheus' sin of avarice, which at that point Zaccheus was able to receive.
Understand, too, that there is a difference between "evangelism" and "witness."
Evangelism is telling people what Jesus did for them. The scriptural model shows us that:
1. Not everyone is an evangelist.
2. An evangelist is gifted in evangelism by the Holy Spirit
3. An evangelist is thoroughly trained in theology by the Church
4. An evangelist is commissioned to a specific mission by the Church
Witnessing is telling people what Jesus did for you. Scripture tells us that:
1. Each one of us is obligated to give witness to what Jesus has done for us
2. Grounding in theology is not required to be a witness, for you are only relating that which you know and have seen firsthand
3. Witnessing can be done nearly immediately after salvation, and can be immensely effective from the very first
Christians tend to underestimate withnessing--telling people what Jesus did for you. In fact, witnessing is much more effective on the street level than evangelism is. The Samaritan woman had only a single short conversation with Jesus, and immediately witnessed more successfully than any of Paul's sermons.
People are much more interested in hearing a review from a "satisfied customer" than a sales pitch.
"I once was blind, but now I see" is as powerful now as when the blind man first said it.