No, our faith does not stand in the wisdom( foolishness) of man, but in the power ( wisdom) of God.A 2x4 would be a modern term for what Jesus spoke of in Matthew and Luke . Not the number 8 .
Don't you like a riddle?
1 Corinthians 2:5 That your faith should not stand in the wisdom of men, but in the power of God.
1 Corinthians 3:19 For the wisdom of this world is foolishness with God. For it is written, He taketh the wise in their own craftiness.