In Genesis 8:21, this signifies that worship from charity and the faith of charity pleased the Lord. (Arcana Coelestia 924-925)

In Exodus 15:25, this signifies that truths became enjoyable. (Arcana Coelestia 8356)

'Sweet' signifies delightful things from the good of truth and the truth of good. Everything sweet in the natural world corresponds to delightful and pleasant things in the spiritual world.

(Odkazy: Apocalypse Explained 618)

924. Verse 21 And Jehovah smelled the odour of rest, and Jehovah said in His heart, I will curse the ground no more on account of man, for the imagination of man's heart is evil from his childhood. And I will no more strike every living thing, as I have done.

'Jehovah smelled the odour of rest' means that worship stemming from these was pleasing to the Lord. 'And Jehovah said in His heart' means that it would never happen again. 'I will curse the ground no more' means that never again would man thus turn himself away. 'On account of man' means as the people who belonged to the descendants of the Most Ancient Church had done. 'For the imagination of man's heart is evil from his childhood' means that the will part of man's mind is totally evil. 'I will no more strike every living thing, as I have done' means that man would never again be able to destroy himself in that way.