Thankful Giving
I think what he's saying, is that it's not the size of the gift that matters, but the love and joy behind the giving of the gift that is important to God.
Working in Concert
According to Paul, the mission of the church can only be accomplished if the entire church body is working in unison. The mission will never be accomplished through the efforts of one mortal person.
Members Only?
God's sovereignty is never exercised in condemning people who ought to be saved, but rather it has resulted in the salvation of people who ought to be lost.
Grape Juice
If Jesus is in our human form, He can be wherever we are. Through us, the Holy Spirit can respond to the needs of others.
Working the Steps
I guess the same could be said about a Christian. If they really wanted to stop sinning, they would. All they have to do is stop. Trust me, it's not that easy. There is always the possibility of a relapse.
The Slippery Slope
He's calling us to remember our past and those times we exercised our free will and did something that we knew wasn't right that ended badly. We knowingly took that first step and the slope immediately got slippery and down we went.