1 Corinthians 15:29-34

Otherwise, what do people mean by being baptized on behalf of the dead? If the dead are not raised at all, why are people baptized on their behalf?

(v29, ESV)

When we are baptized, we are baptized in the name of Jesus. If Jesus is dead, why are we baptizing into the name of someone dead? However, we have hope and faith knowing that Jesus is alive. We are baptized into the name of Jesus, who conquered death. Again the point is made that all we do for Jesus is meaningless if the dead are not raised. We might as well sit back and enjoy the pleasures in life without a care for the consequences beyond this life. However, Jesus is alive and we should live for Him.

Do not be deceived: "Bad company ruins good morals."

(v33, ESV)

Clearly we shouldn't be influenced by others. Bad company includes those who believe there is no such thing as the resurrection of the dead. Their beliefs will influence us and we should cast out this belief or cast them out if they disagree. Hopefully they would see the light and realize their mistake. The idea I get from this is similar to that found in Chapter 5. The sexually immoral man among them is to be taken out from their midst in a sense.

you are to deliver this man to Satan for the destruction of the flesh, so that his spirit may be saved in the day of the Lord.

(1 Cor 5:5, ESV)

Regardless, the point is made that we should believe in the resurrection of the dead. Clearly as Christians, our faith is nothing if there is no resurrection of the dead. Jesus has not been raised from the dead if there is no resurrection of the dead.