Romans 8:39

nor powers, nor height, nor depth, nor any other creature, shall be able to separate us from the love of God, which is in Christ Jesus our Lord.

1 Peter 1:7

that the trial of your faith, which is more precious than gold that perishes, however being tried by the fire, may be found unto praise and glory and honor in the revelation of Jesus Christ:

Treasury of Scripture Knowledge

Summary

The heaven for height, and the earth for depth, and the heart of kings is unsearchable.

Heaven

Is unsearchable

Bible References

Heaven

Romans 8:39
nor powers, nor height, nor depth, nor any other creature, shall be able to separate us from the love of God, which is in Christ Jesus our Lord.

Is unsearchable

1 Peter 1:7
that the trial of your faith, which is more precious than gold that perishes, however being tried by the fire, may be found unto praise and glory and honor in the revelation of Jesus Christ: