The Levites sang this psalm in the liturgy of a high festival that annually celebrated the cosmic rule of the LORD (perhaps the Feast of Tabernacles). Worship leaders call the congregation of God's people to praise the LORD (st. 1) as the one true God and the King of all creation (st. 2). As Israel's Maker and Shepherd, the LORD is to be worshiped reverently (st. 3) and served in humble obedience. God warns the people not to harden their hearts as their ancestors had done in the wilderness (w. 8-10). The people will enter into the LORD's promised "rest" only if they live according to God's will (st. 4). The versification (altered) is from the 1912 Psalter. Another setting of Psalm 95 is at 173.
Bert Polman, Psalter Hymnal Handbook
We celebrate with joy that Christ has come to rescue us from sin and evil through the work of his son, Jesus Christ. Our World Belongs to God, paragraph 35 identifies the church as “the fellowship of those who confess Jesus as Lord…the bride of Christ…”
Belgic Confession, Article 21 professes how Jesus Christ is a high priest forever and provided for the cleansing of our sins; Article 10 proclaims him as the “true eternal God, the Almighty, whom we invoke, worship and serve.” Heidelberg Catechism, Lord’s Day 1, Question and Answer 2 calls us to “live and die in the joy of this comfort” and “to thank God for such deliverance.”
In a world with many threats and enemies, we find hope and security in his fatherly care. Both Belgic Confession and Heidelberg Catechism put significant focus on the Providence of God and the care God provides for us. Heidelberg Catechism, Lord’s Day 9, Question and Answer 26 professes that he “will provide whatever I need for body and soul” and that we are “completely in his hand.” In Belgic Confession, Article 13 professes that he “watches over us with fatherly care.”