Psalm 30:4 Sing unto the Lord, O ye saints of his, and give thanks at the remembrance of his holiness.
Our response to God’s grace and goodness is to sing psalms, hymns, and spiritual song, making melody in the heart to the Lord. It is natural to sing unto the Lord when Christians gather in His name, and we sing in our hearts throughout the day. God gave us the gift of music that we might praise the Lord regularly.
And we give thanks always when we remember His holiness, power, and love, and particularly when we remember that because of Christ God has shared His Life, Love, and Holiness with us. We thank Him for eternity, and even that is not enough time to properly remember Him. To remember is to call to mind something from the past, like the death and resurrection of Christ, and make it active and effective in the present. Remembering by faith makes it real today, and we cannot repress our thankfulness. Singing aids our faithful thanksgiving.