John Trapp on Nehemiah 10:29

Verſe 29. They clave to their brethren] Heb. They laid faſt hold on them, viz. by taking holy of the Covenant, to keep the Sabbath from polluting it, and chuſing the things that pleaſe God, as Eſay 56.4, 6.

And entred into a curſe] The more to confirme the oath, and to keep their deceitful hearts cloſe to God. See Deut. 29.12, 21. This is called the oath of God, Eccleſ. 8.2. Confer Iſa. 19.18. and 44.5. 2 Chron. 15.12, 14. and 34.31.

To walk in Gods Law] Ex gnomone & Canone decalogi, to walk accurately and exactly by line and by rule, In all the Commandments and Ordinances of the Lord blameleſſe, Aug. in Exod. Quaeſti. 55. Luke 1.6. ſo far as by his grace He ſhould vouchſafe to aſſiſt them. For lex jubet, gratia juvat. The bowles of the Candleſtick have no oile, but what droppeth from the olivebranches. David can wiſh well to the keeping of Gods Commandments diligently, Pſal. 119.4, 5. but promiſe no further then God ſhall pleaſe to enlarge his heart, verſe 32. Vows and Covenants indefinitely and abſolutely made (as that of Jephta, Judg. 11.31.) prove a ſnare. Condition with the Lord for his ſtrength and grace; rely not on thine own ſufficiency, leſt it repent thee of thy raſhneſſe and ſelf-confidence, as it befell Peter. Conſider that thou art but a poor gariſon-ſouldier: and without ſupplies of the Spirit of Jeſus Chriſt, Phil. 1.19. thou canſt do nothing. David knew this, and therefore called earneſtly for help from heaven, Pſal. 51.13, 14, 15. & 119.106, 107.