I will behave myself wisely in a perfect way. O when wilt thou come unto me? I will walk within my house with a perfect heart.
Ver. 2. I will behave myself wisely] I will begin the intended reformation at myself, and then set things to rights in my family, which while Augustus did not he was worthily blamed by his subjects, and told, that public persons must carefully observe,
Aedibus in propriis quae recta aut prava gerantur (Plut.).
Cato said, that he could pardon all men's faults but his own. But Cato the wise wanted the wisdom from above, and was therefore short of David, who promiseth here to be merry, "I will sing," and yet wise, "I will behave myself wisely in a perfect way"; that is, in an upright conversation, and in a faithful discharge of the great trust committed unto me.
Oh when wilt thou come unto me?] In the performance of thy promise concerning the kingdom? For I am resolved not to antevert thee, but to wait thy coming; Est suspirium pii animi ex abrapto, like that of Jacob, "I have waited, O Lord, for thy salvation," Genesis 49:18. Or, When wilt thou come, viz. to reckon with me? For come thou wilt.
I will walk within my house with a perfect heart] And "although my house be not so with God," yet "this is all my desire" (and shall be mine endeavour), "although he make it not to grow," 2 Samuel 23:5. I will walk incessantly, Indefinenter ambulabo (Kimchi), walk in the midst of mine house, sicut cogitabundus et intentus ambulat huc et illuc, 2 Kings 4:34, and this I will do in the uprightness of mine heart; for that a man is in truth, that he is at home. Follow hypocrites home to their houses, and there you shall see what they are. Look upon stage players, and you may see them act the parts of kings and honest men, but follow them to their own houses, and there they are but base servants.