1 Corinthians 15
All in all, Paul is testifying on the matter on the resurrection of Christ, and with it the baptism of Christ.
Here is the link I posted within my blog, which is more of a cross reference study:
Baptism for the dead.
V58 "Therefore, my dear brothers, stand firm. Let nothing move you. Always give yourselves fully to the work of the Lord, because you know that your labor in the Lord is not in vain."
To God be the Glory.