Psalms 33:13-15

13-15. The psalmist reiterates the personal and minute inspection of the hearts of all men, to show that this knowledge will make a sure pathway for infinite power to execute eternal justice.

He fashioneth their hearts alike The Hebrew yahhad, translated “alike,” and usually translated together, here means, wholly, altogether. The idea is, that the creation and endowment of man’s heart his intellective, moral, and psychical being is wholly, or altogether, God’s work. The Septuagint renders it μονας , alone, and the Vulgate, sigillatim, individually, every one of them. The argument requires this sense. God alone made the heart, and he alone perfectly understands all its workings. The passage is parallel to Psalms 94:9-10