Ver. 1. O God, my heart is fixed] For Psalms 108:1-5 of this psalm, see the notes on Psalms 57:7-11. And for Psalms 108:6-13, see the notes on Psalms 60:5-12. A Psalm of David] Written by him, usque adeo terribili et horrifica oratione, saith Beza, in such terrible terms, as the like is not to be found in Holy Scripture; wherefore it is to be read and used with very great judgment, and not as those miscreants of whom Faber writeth, Quod more magico clam murmurabant hune Psalmum per modum execrationis in eorum hostes, that after a conjuring fashion they muttered out this psalm, by the way of curse upon their enemies.