Psalms 101:2 - Matthew Poole's English Annotations on the Holy Bible

I will behave myself wisely in a perfect way; I will manage all my affairs with wisdom and integrity; which are two chief qualifications requisite for all men, Matthew 10:16 and most necessary in princes. O when wilt thou come unto me? O when wilt thou give me the kingdom which hast promised me, that so I may be capable of executing these good purposes, both for my own comfort, and for the benefit of thy people? Or without an interrogative, as this particle is used, Exodus 20:24, when thou shalt come to me, to wit, in the performance of that promise to me. He speaks not exclusively, as if he would not walk wisely and righteously in the mean time, but emphatically, that he would continue to do so when he was advanced to the kingdom, and that he would not suffer himself to be corrupted by his royal power and dignity, as the princes of the world commonly were. Withal, he may intimate now he could not do as he desired, and that by the necessity of his affairs he was forced to make use of such men as he did not like, and to wink at those miscarriages which it was not now in his power to reform. God is oft said in Scripture to come to men when he fulfils a promise to them or confers a favour or blessing upon them, as Genesis 10:3:10 Exodus 20:24 Psalms 80:2 Isaiah 35:4, &c. Within my house; in my own court and family, as well as in my public administrations; knowing how great an influence the example of my private conversation will have upon my people, either to reform or corrupt them. With a perfect heart: this clause adds weight to the former; I will not only walk in a perfect or right way, (which a man may do for politic reasons, or with evil design,) but I will do so with an upright and honest heart, which is most acceptable to God.