Catechesis Notes for the Week — Psalm 149: A Call to Worship—Psalm 149 is a call to worship. We are to praise the Lord for all His acts of salvation. We are to sing to the Lord a new song—which is the song of grace, mercy, and forgiveness in Christ. It is not the old song of works righteousness and self-justification. Every reference in the psalm to Israel and the saints can be interpreted for us today as referring to the Church and all faithful believers in Christ (the saints). We praise the Lord and sing the new song of salvation because He delights in His Church and beautifies us with His righteousness that covers all our sin. The two-edged sword is a reference to the Word of God. The Law condemns, crucifies, judges, and, therefore, calls to repentance. The Gospel proclaims the judgment of God’s righteousness, which is the honor and glory of all His saints.

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