The cry for an answer by deed is based on the name and on the past acts of God. Grammatically, it would be possible and regular to render "my God of righteousness," _i.e._, "my righteous God"; but the pronoun is best attached to "righteousness" only, as the consideration that God is righteous is less relevant than that He is the source of the psalmist's righteousness. Since He is so, He may be expected to vindicate it by answering prayer by deliverance. He who feels that all good in himself comes from God may be quite sure that, sooner or later, and by some means or other, God will witness to His own work. To the psalmist nothing was so incredible as that God should not take care of what He had planted, or let the springing crop be trodden down or rooted up. The Old Testament takes prosperity as the Divine attestation of righteousness; and though they who worship the Man of Sorrows have new light thrown on the meaning of that conception, the substance of it remains true for ever. The compellation "God of my righteousness" is still mighty with God. The second ground of the prayer is laid in the past deeds of God. Whether the clause "Thou hast in straits made space for me" be taken relatively or not, it appeals to former deliverances as reasons for man's prayer and for God's act. In many languages trouble and deliverance are symbolised by narrowness and breadth. Compression is oppression. Closely hemmed in by crowds or by frowning rocks, freedom of movement is impossible and breathing is difficult. But out in the open, one expatiates, and a clear horizon means an ample sky.