Psalm 19 Jan. 9 For the Chief Musician. A Psalm by David.  1The heavens declare the glory of God, the expanse above shows His handiwork. 2Day after day they pour forth speech, and night after night they display knowledge. 3There is no speech nor language where their voice is not heard. 4Their voice has gone out through all the earth, their words to the end of the world. In them He has set a tent for the sun, 5which is as a bridegroom coming out of his room, like a strong man rejoicing to run his course. 6His going forth is from the end of the heavens, his circuit to its ends; there is nothing hidden from its heat. 7Yahweh’s law is perfect, restoring the soul. Yahweh’s testimony is sure, making wise the simple. 8Yahweh’s precepts are right, rejoicing the heart. Yahweh’s commandment is pure, enlightening the eyes. 9The fear of Yahweh is clean, enduring forever. Yahweh’s ordinances are true, and righteous altogether. 10More to be desired are they than gold, yes, than much fine gold; sweeter also than honey and the extract of the honeycomb. 11Moreover by them is Your servant warned; in keeping them there is a great reward. 12Who can discern his own errors? Forgive me from sins of ignorance.  13Keep back Your servant also from presumptuous sins, let them not have dominion over me. Then I will be upright, I will be blameless and innocent of the great transgression. 14Let the words of my mouth and the meditation of my heart be acceptable in Your sight, Yahweh, my rock and my redeemer.   

Commentary

19:4 This is quoted in Rom. 10:18 about the preaching of the Gospel into all the world. Thus in the same way as the sun and stars witness to God’s existence worldwide, so the Gospel is to be taken world-wide. The Psalm therefore moves on to talk about the power of God’s word (:7,8) which is being preached.
19:12 If we hope for forgiveness for sins of ignorance, we are accepting that we will be forgiven without specific repentance. As we forgive, according to the principles we apply to forgiving others, so we will be forgiven. If we hope ourselves for forgiveness for sins we’ve not specifically repented of, because we are unaware of them, we likewise must forgive others the sins they do against us without repentance. To insist that we will only forgive others if they repent would mean that we would be unable to pray this prayer.