John Trapp on Nehemiah 10:35

Verſe 35. And to bring the firſt-fruits of our Ground] Heb. The firſt-borne. Theſe firſt-fruits were the fiftieth part; and, if any would be more liberall in paying, the fourtieth; or, being poorer, the ſixtieth part.

And the firſt-fruits of all fruits of all trees] God required to be honoured with the firſtlings of all; to ſhew how he ſets by our young-ſervices. We prize nettle-buds when they firſt put forth: ſo doth God remember and regard the kindneſſe of our youth. Jer. 2.1.