For the preaching of the cross is to them that perish foolishness; but unto us which are saved it is the power of God. (1 Corinthians 1:18)
To those who do not know the saving grace of Christ, our actions and love for Him are foolishness. We who are saved know the power of God and have seen it work firsthand in our lives. It is not foolishness, but an amazing God with an incredible love for a worthless and sinful people.