Ecclesiastes 3:10-15 - No One Understands God's Mysterious Plan

10 I have seen the travail that God hath given to the sons of man to be humbled by it. 11 The whole He hath made beautiful in its season; also, that knowledge He hath put in their heart without which man findeth not out the work that God hath done from the beginning even unto the end. 12 I have known that there is no good for them except to rejoice and to do good during their life, 13 yea, even every man who eateth and hath drunk and seen good by all his labour, it is a gift of God. 14 I have known that all that God doth is to the age, to it nothing is to be added, and from it nothing is to be withdrawn; and God hath wrought that they do fear before Him. 15 What is that which hath been? already it is, and that which is to be hath already been, and God requireth that which is pursued.