Charles H. Spurgeon on Psalms 109:6

At his right hand. The strength or force of the body shows itself principally in the right hand. Therefore, he who wishes to obstruct another, and to hinder his endeavour, stands at his right hand; and thus easily parries his stroke or attempt. This I consider to be the most simple meaning of this passage which shows that God represses and restrains the raging of the enemies of the Church, who withstand each other by their opposing efforts, either from envy or from other causes. Thus, 2Sa 17:1-29, the counsels of Ahithophel are broken by Hushai; and in our day we see that the counsels and attempts of our enemies have been frequently and wonderfully restrained by the hindrances they have give one to the other: in which matter the goodness of God is to be discerned. —Mollerus.