What did Les say is the core of everything Paul writes about?
The core is the work of the cross: Christ died for our sins, shed His blood, was buried, and rose from the dead. Paul constantly brings this fact into his letters, emphasizing that salvation rests on Christ's finished work, not legalism or law-keeping.
Les explains that all Paul knows is the work of the cross: how Christ died for our sins, shed His blood, was buried, and rose from the dead. He says that is the core of everything Paul writes. In Galatians, Paul defends his apostleship and stresses that Christ gave Himself for our sins to deliver us from this present evil world. The Galatian believers were being pressured back under the law, but Paul reminds them they are not under law but under grace.