This psalm calls the godly to praise God for His dependable Word and His righteous works. The psalmist also assured the readers that He will be faithful to those who trust in Him.
"If the purest form of a hymn is praise to God for what He is and does, this is a fine example. The body of the psalm is occupied with the Lord as Creator, Sovereign, Judge and Saviour, while the beginning and end express two elements of worship: an offering of praise, doing honour to so great a King, and a declaration of trust, made in humble expectation."83
The Hebrew text does not identify the writer of this psalm though the Septuagint translators believed he was David. Perhaps they concluded this because other psalms that David composed surround this one (cf. Ps. 72:20). The occasion of writing appears to have been a national victory.