Commentaries:
Paul is saying, as we approach Passover, we should not take a leisurely approach to our contemplation of sin, thinking that, "Well, I will be safe if I allow myself to go this far and no further." A person who does this is really in danger. Such person thinks he stands, yet he is in position to tempt God. The only safe course is to have nothing to do with sin.
John W. Ritenbaugh
Passover and I Corinthians 10