The author declares six different ways in these five verses that he will talk about God’s righteous ways, endless salvation, mighty acts, marvelous deeds, and power and might to the next generation and all who are to come. Since his youth the Lord taught him. Now in his old age he will teach the younger generations.
Jesus told his apostles before he left them, “…teach them to obey everything I have commanded you. And surely I am with you always, to the very end of the age.” (Matthew 28:20) Apostle Paul wrote to the congregation in Collisi, “Let the message of Christ dwell among you richly as you teach and admonish one another with all wisdom through psalms, hymns, and songs from the Spirit, singing to God with gratitude in your hearts.” (Colossians 3:16)
The author of the psalm did not know everything about the righteousness and salvation of God (15), but what he did know from personal application of the word of God, he taught to others with the inspiration of the insight of the Spirit of God. So did the woman who meet Jesus at the well in Sameria and the man who Jessus freed from demon possessed and living in the tombs by the Sea of Galilee.
