Matthew Henry Commentary Psalms 71:14-24

"But I will hope continually, And will praise thee yet more and more. My mouth shall tell of thy righteousness, [And] of thy salvation all the day; For I know not the numbers [thereof]. I will come with the mighty acts of the Lord Jehovah: I will make mention of thy righteousness, even of thine only. O God, thou hast taught me from my youth; And hitherto have I declared thy wondrous works. Yea, even when I am old and grayheaded, O God, forsake me not, Until I have declared thy strength unto [the next] generation, Thy might to every one that is to come. Thy righteousness also, O God, is very high; Thou who hast done great things, O God, who is like unto thee? Thou, who hast showed us many and sore troubles, Wilt quicken us again, And wilt bring us up again from the depths of the earth. Increase thou my greatness, And turn again and comfort me. I will also praise thee with the psaltery, [Even] thy truth, O my God: Unto thee will I sing praises with the harp, O thou Holy One of Israel. My lips shall shout for joy when I sing praises unto thee; And my soul, which thou hast redeemed. My tongue also shall talk of thy righteousness all the day long; For they are put to shame, for they are confounded, that seek my hurt." — Psalms 71:14-24 (ASV)

The psalmist declares that the righteousness of Christ, and the great salvation obtained through it, will be the chosen subject of his discourse. Not on the Sabbath only, but on every day of the week, of the year, of his life. Not merely at set times of solemn devotion, but on every occasion, all day long. Why will he always dwell on this?

Because he did not know their full measure. It is impossible to measure the value or the fullness of these blessings. The righteousness is unspeakable, the salvation everlasting. God will not cast off his grey-headed servants when they are no longer capable of labouring as they have done. The Lord often strengthens his people in their souls when nature is sinking into decay.

And it is a debt that the old disciples of Christ owe to succeeding generations, to leave behind them a solemn testimony to the advantage of religion and the truth of God's promises; and especially to the everlasting righteousness of the Redeemer.

Assured of deliverance and victory, let us spend our days, while waiting for the approach of death, in praising the Holy One of Israel with all our powers. And while speaking of his righteousness and singing his praises, we will rise above fears and infirmities and have earnests of the joys of heaven.

The work of redemption ought, above all God's works, to be spoken of by us in our praises. The Lamb that was slain and has redeemed us to God is worthy of all blessing and praise.