And they sing the song of Moses the servant of God, and the song of the Lamb, saying, Great and marvellous are Thy works, Lord God Almighty; just and true are Thy ways, Thou King of saints. – Revelation 15:3

We know very much on earth what makes us happy; Jesus Christ hath taught us many things that give us joy and gladness. It is a world of ignorance, but still through grace we have entered into the school of the gospel, and we have learned some sweet truths. It is true we are very much like the boy who is beginning to write. We had to make many ugly pothooks and hangers, and we have not yet learned to write with the sweet running hand of joy; but nevertheless, the Lord has taught us some great truths to fill our heart with joy; the great doctrine of election, the knowledge of our redemption, the fact of our security in Christ; these great but simple doctrines have filled our hearts with bliss…There are old casks of knowledge that contain the richest wine, and Christ shall stave them in, and we shall drink of them to the full. It is not fit that we should know all things now, we could not bear many things, and therefore Christ keeps them back, but

“There shall you see and hear and know
All you desired or wished below,
And every power find sweet employ
In that eternal world of joy.”

It needs but that we should see our Lord, that we should fly into His arms, that we should feel His embrace, that we should fall at His feet, and, was I about to say, weep for joy? ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0226.cfm