Take hold of shield and buckler - That is, Arm thyself as if for the contest. It is a prayer, in a new form, that God would interpose, and that he would go forth as a warrior against the enemies of the psalmist. On the word “shield,” see the notes at Psalms 5:12. Compare the notes at Ephesians 6:16. On the word “buckler,” see the notes at Psalms 18:2. These terms are derived from the armor of a warrior, and the prayer here is that God would appear in that character for his defense.
And stand up for my help - As a warrior stands up, or stands firm, to arrest the attack of an enemy.