Charles H. Spurgeon on Psalms 56:8

My tear: the singular used collectively. In thy bottle: as if one should say, take care of my tears, as of a kind of wine that is very costly, and very pleasant to thee; or, that hereafter you may measure out to me just that quantity of joys: a metaphor from the keeper of a vineyard, who receives into his vessel the drops of the grapes pressed out by the winepress of affliction. The word dag (iter) (leather or skin bottle) denotes the manner in which they preserved their wine. (1Sa 16:20; Jos 9:4,13), and milk also (Jud 4:19). Martin Geier.