Carl Friedrich Keil and Franz Delitzsch Old Testament Commentary

His experience is not singular, but the enmity of the world and sin bring all who belong to the people of God into straits just as they have him. And the need of the individual will not cease until the need of the whole undergoes a radical remedy. Hence the intercessory prayer of this meagre closing distich, whose connection with what precedes is not in this instance so close as in Ps 34:23. It looks as though it was only added when Ps 25 came to be used in public worship; and the change of the name of God favours this view. Both Psalms close with a פ in excess of the alphabet. Perhaps the first פ represents the π, and the second the φ; for Psa 25:16; Psa 34:17 follow words ending in a consonant, and Psa 25:22; 34:23, words ending in a vowel. Or is it a propensity for giving a special representation of the final letters, just as these are sometimes represented, though not always perfectly, at the close of the hymns of the synagogue (pijutim)?