Among the mysteries that everybody must face is “Who am I?” and “Why am I here?” Another version of those questions is “Why was I born?” A partial but probably unsatisfying answer is that, unless God calls and reveals Himself to a person, he will never find the clear, detailed answer. Thus, Solomon states in verse 11, “No one can find out the work that God does from beginning to end.” So that the called, those to whom God has revealed Himself, are thoroughly convinced of the great gift God has given them, a fuller version of this declaration appears in Ecclesiastes 8:17:
Then I saw all the work of God, that a man cannot find out the work that is done under the sun. For though a man labors to discover it, yet he will not find it; moreover, though a wise man attempts to know it, he will not be able to find it.
God undoubtedly planned much of this blindness. This does not mean that people will never hear the answer to “Why was I born?” in their lifetimes. But unless God is directly involved in calling them for His purposes, their hearing the simple and plain truth of it will not have the life-changing impact needed to change the direction of their lives. A person must be gifted by His calling (Matthew 13:10-17).
God has given everyone a spirit and a sense of eternity, enabling people to think both backward and forward in time. Men innately know that there is more to life than what they experience physically. However, they do not grasp the precise connection between their awareness of eternity and their present physical lives. They do, however, vaguely grasp that somehow the immortality they envision has some connection with what they are experiencing in the present. However, this is greatly botched, and misunderstanding is universal. The most common assumption is that we already possess it. But, if linked with revealed truth as God intended, it greatly aids people in thinking about the past concerning God's creative powers, His purpose, His sovereignty over all things, and how the individual fits into the present and future.
God has given gifts to all humanity, but only those called by Him are given more detailed and true explanations that will build their faith, enabling them to live by it. Unless God gives the details, we are all much like terribly near-sighted people who more or less feel their way along. Until they are called, the grand design that God is working out escapes their fuller comprehension, making the answer about who we are elusive.
The instruction in Ecclesiastes 3:10-15 encourages us to be content and patient. It is a reflection on and a reminder of the importance of what He already said about gifts in Ecclesiastes 2:24-26. We should be thankful and rejoice in what we already have because what we have is wonderful. Without directly stating a clear “why,” Solomon gently implies that God will add understanding as we are able to make good use of it.