David's flight begins a period to which a large number of his psalms are referred. We may call them "The Songs of the Outlaw." The titles in the psalter connect several with specific events during his persecution by Saul, and besides these, there are others which have marked characteristics in common, and may therefore be regarded as belonging to the same time. The bulk of the former class are found in the second book of the psalter (Ps. xlii.-lxxii.), which has been arranged with some care. There are first eight Korahite psalms, and one of Asaph's; then a group of fifteen Davidic (li.-lxv.), followed by two anonymous; then three more of David's (lxviii.-lxx.), followed by one anonymous and the well-known prayer "for Solomon." Now it is worth notice that the group of fifteen psalms ascribed to David is as nearly as possible divided in halves, eight having inscriptions which give a specific date of composition, and seven having no such detail. There has also been some attempt at arranging the psalms of these two classes alternately, but that has not been accurately carried out. These facts show that the titles are at all events as old as the compilation of the second book of the psalter, and were regarded as accurate then. Several points about the complete book of psalms as we have it, seem to indicate that these two first books were an older nucleus, which was in existence long prior to the present collection--and if so, the date of the titles must be carried back a very long way indeed, and with a proportionate increase of authority. Of the eight psalms in the second book having titles with specific dates, five (Ps. lii., liv., lvi., lvii., lix.) are assigned to the period of the Sauline persecution, and, as it would appear, with accuracy. There is a general similarity of tone in them all, as well as considerable parallelisms of expression, favourite phrases and metaphors, which are favourable to the hypothesis of a nearly cotemporaneous date. They are all in what, to use a phrase from another art, we may call David's earlier manner. For instance, in all the psalmist is surrounded by enemies. They would "swallow him up" (lvi. 1, 2; lvii. 3). They "oppress" him (liv. 3; lvi. 1). One of their weapons is calumny, which seems from the frequent references to have much moved the psalmist. Their tongues are razors (lii. 2), or swords (lvii. 4; lix. 7; lxiv. 3). They seem to him like crouching beasts ready to spring upon harmless prey (lvi. 6; lvii. 6; lix. 3); they are "lions" (lvii. 4), dogs (lix. 6, 14). He is conscious of nothing which he has done to provoke this storm of hatred (lix. 3; lxiv. 4.) The "strength" of God is his hope (liv. 1; lix. 9, 17). He is sure that retribution will fall upon the enemies (lii. 5; liv. 5; lvi. 7; lvii. 6; lix. 8-15; lxiv. 7, 8). He vows and knows that psalms of deliverance will yet succeed these plaintive cries (lii. 9; liv. 7; lvi. 12; lvii. 7-11; lix. 16, 17).