John Trapp on Isaiah 26:7

Ver. 7. The way of the juſt is uprightneſs] Heb. Ʋprightneſſes, that is, juſt and ſtrait courſes: They turn not aſide to crooked and wry wayes, as do the workers of iniquity, Pſal. 125.5. but hold on in an even way without windings or writhings, Prov. 4.26, 27. the Kings high-way to heaven is their rode, and this leadeth them to that City of God, ver. 1, 2.

Thou moſt upright doſt weigh the path of the juſt] Or, Thou doſt by levelling make the juſt mans path even. By thy preventing grace thou makeſt him juſt and upright, and by thy ſubſequent grace thou ſtrengtheneſt and directeſt him, that he may run and not be weary, walk and not faint, Iſa. 40.21.