Adam Clarke on 1 Corinthians 15:13

If there be no resurrection of the dead - As Christ was partaker of the same flesh and blood with us, and he promised to raise mankind from the dead through his resurrection, if the dead rise not then Christ has had no resurrection. There seem to have been some at Corinth who, though they denied the resurrection of the dead, admitted that Christ had risen again: the apostle's argument goes therefore to state that, if Christ was raised from the dead, mankind may be raised; if mankind cannot be raised from the dead, then the body of Christ was never raised.