Paul is arguing against those who say that there is no resurrection. In these verses Paul first argues that just as man’s solidarity with Adam produced (and still produces) death, so our solidarity with Christ, who has been raised from death to life, procures for us a new resurrection-life.
In Christ all will be brought to life. This is a future hope which he expects to be realized very shortly. Moreover, if there were no resurrection beyond this life, the old saying, “Let us eat and drink, for tomorrow we die” would be a valid philosophy of life, and all Paul’s sufferings would be in vain. But the Corinthians, as we also, should not be deceived by the arguments and philosophies of men. We will all account to God someday as we all stand before Him.
It behoves us all, therefore, not to sin and to seek a loving relationship with Him.That is all He desires, to show us love and we reciprocate the same love.