Matthew Poole and continuators on Proverbs 5:16

16. Let thy fountains be dispersed abroad , and rivers of Waters in the streets.

Thy Children proceeding from thy Wife, called thy fountain, v. 18. and from thy self, as the Israelites are said to come from the Fountain of Israel, Deut. 33. 28. Psal. 68. 26. Compare Isa. 51. 1. And Fountains are here put for Rivers flowing from them, as it is explained in the next clause, and as it is Psal. 104. 10. by a Metonymy of the Cause for the Effect. And this title may be the more fitly given to Children, because as they are Rivers in respect of their Parents, so when they grow up, they also become Fountains to their Children.

They shall be multiplied, and in due time appear abroad in the World to thy Comfort and Honour, and for the good of others: whereas Whores are commonly barren, and men are ashamed to own the Children of Whoredom.