He put a new song in my mouth

A beautiful reference to Psalm 45:1, which says, "My heart overflows with a pleasing theme; I address my verses to the king; my tongue is like the pen of a ready scribe. You have made my heart sing a new song, a hymn to our God. Many will see and fear, and put their trust in the Lord."

In this psalm, the writer is expressing their joy and gratitude to God for giving them a new song to sing, a song that comes from their heart and is a praise to God. It's a beautiful metaphor for the way that God can use our words and music to express His love and praise.

In a broader sense, the phrase "he put a new song in my mouth" can be seen as a metaphor for the way that God can transform our lives and give us a new perspective, a new heart, and a new song to sing. It's a reminder that our words and actions can be a reflection of God's love and presence in our lives, and that He can use us to bring joy and praise to others.