Commentaries:
Barnes' Notes
For he established a testimony in Jacob - He ordained or appointed that which would be for a "witness" for him; that which would bear testimony to his character and perfections; that which would serve to remind them of what he was, and of his authority over them. Any law or ordinance of God is thus a standing and permanent witness in regard to his character as showing what he is.
And appointed a law in Israel - That is, He gave law to Israel, or to the Hebrew people. Their laws were not human enactments, but were the appointments of God.
Which he commanded our fathers ... - He made it a law of the land that these testimonies should be preserved and faithfully transmitted to future times. See Deuteronomy 4:9; Deuteronomy 6:7; Deuteronomy 11:19. They were not given for themselves only, but for the benefit of distant generations also.
DISCLAIMER: Church of the Great God (CGG) provides these resources to aid the individual in studying the Bible. However, it is up to the individual to "prove all things, and hold fast to that which is good" (I Thessalonians 5:21). The content of these resources does not necessarily reflect the views of CGG. They are provided for information purposes only.