The prevailing thought of the New Song is giving heartfelt thanks for the blessings God has given to us. That is the very thing that makes it a New Song, that a person is filled with thanks toward God, whether it be on Easter, Ascension Day, or any other day of special remembrance.
The Old Song was a song of dissatisfaction, of thanklessness, of disobedience. It had its origin in Adam and Eve. God had richly blessed our original parents, but the devil convinced them that God did not really mean to be good to them. Through these lies of the devil, their understanding was darkened, their childlike trust was destroyed, and their holy nature was penetrated by the evil of sin—the sin of thanklessness.
But now, through the message of the Gospel concerning the grace and love of God in Christ Jesus, the true knowledge of God as the Giver of all good things has again been established. It comes to people only through the New Song, the hymn of giving thanks.
The believers love to sing one hymn of praise after another. Through the Gospel they possess the true knowledge of God, and from this inevitably follows the Song of thankful and grateful hearts.
Help me, O God, that I may rightly know Thee, and praise and glorify Thee for Thy blessings. Amen.