There is a time for everything,  and a SEASON for every activity UNDER heaven.
Ecclesiastes 3:1

2 a time to be born and a time to die,  a time to plant and a time to uproot,  3 a time to kill and a time to heal,  a time to tear down and a time to build,  4 a time to weep and a time to laugh,  a time to mourn and a time to dance,  5 a time to scatter stones and a time to gather them,  a time to embrace and a time to refrain,  6 a time to search and a time to give up,  a time to keep and a time to throw away,  7 a time to tear and a time to mend,  a time to be silent and a time to speak,  8 a time to love and a time to hate,  a time for war and a time for peace.
Ecclesiastes 3:2-8

 He has made everything beautiful in its time. He has ALSO set eternity in the hearts of men; yet they cannot fathom what God has done from beginning to end.
Ecclesiastes 3:11

For since the creation of the world God’s invisible qualities—his eternal power and divine nature—have been clearly seen, being understood from what has been made, so that men are without excuse.
Romans 1:20

No eye has seen, no ear has heard, no mind has conceived what God has prepared for those who love him.
1 Corinthians 2:9

… heard inexpressible things, things that man is not permitted to tell.
  2 Corinthians 12:4

I looked and there before me was a great multitude that no one could count, from every nation, tribe, people and language, standing before the throne and in front of the Lamb.
Revelation 7:9

Lord, YOU have been our dwelling place in all generations.  Before the mountains were brought forth,  Or ever YOU had formed the earth and the world,  Even from everlasting to everlasting, YOU are God.
Psalm 90:1-2

There is none like you, O Lord; no deeds can compare with yours.  All the nations you have made will come and worship before you, O Lord; they will bring glory to your name. For you are great and do marvelous deeds; you alone are God.
 Psalm 86:8-10