Ecclesiastes 8:17; Ecclesiastes 3:11; Philippians 1:6

17 I realized that no one can discover everything God is doing under the sun. Not even the wisest people discover everything, no matter what they claim.
11 Yet God has made everything beautiful for its own time. He has planted eternity in the human heart, but even so, people cannot see the whole scope of God’s work from beginning to end.
6 And I am certain that God, who began the good work within you, will continue his work until it is finally finished on the day when Christ Jesus returns.