Romans 11:33

O, how deep is the richness of God's wisdom and knowledge! How difficult [it is for us] to explain His judgments and how impossible [for us] to accurately track how He operates!

Revelation 15:3

And they were singing the song of Moses, the servant of God, and the song of the Lamb. [The words were], "Your deeds are great and marvelous, O Lord, God Almighty; your ways are just and true, O King of the nations [or, "ages"].

Treasury of Scripture Knowledge

Summary

God thundereth marvellously with his voice; great things doeth he, which we cannot comprehend.

Bible References

Great

Romans 11:33
O, how deep is the richness of God's wisdom and knowledge! How difficult [it is for us] to explain His judgments and how impossible [for us] to accurately track how He operates!
Revelation 15:3
And they were singing the song of Moses, the servant of God, and the song of the Lamb. [The words were], "Your deeds are great and marvelous, O Lord, God Almighty; your ways are just and true, O King of the nations [or, "ages"].