I'm not going to post a sermon text. This is a topic, and scripture to support it. The subject is often argued in the BDF and other forums, but I rarely hear it addressed from the pulpit.
Topic: How do I know that I am saved and will go to heaven.
Scripture: Galatians 5:18-26
Gal 5:18 But if you are led by the Spirit, you are not under the law.
Gal 5:19 Now the works of the flesh are evident: sexual immorality, impurity, sensuality,
Gal 5:20 idolatry, sorcery, enmity, strife, jealousy, fits of anger, rivalries, dissensions, divisions,
Gal 5:21 envy, drunkenness, orgies, and things like these. I warn you, as I warned you before, that those who do such things will not inherit the kingdom of God.
Gal 5:22 But the fruit of the Spirit is love, joy, peace, patience, kindness, goodness, faithfulness,
Gal 5:23 gentleness, self-control; against such things there is no law.
Gal 5:24 And those who belong to Christ Jesus have crucified the flesh with its passions and desires.
Gal 5:25 If we live by the Spirit, let us also keep in step with the Spirit.
Gal 5:26 Let us not become conceited, provoking one another, envying one another.
Question: Am I really saved?
Answers:
1. Are any of the things in verses 19-21 a part of your life? If so "those who do such things will not inherit the kingdom of God".
2. Do you have the fruit of the Spirit? If not, check your lifestyle.
I'll let you take it from here. There are many people in congregations around the world who think that they are saved and are lost because they don't know how to truly be saved.