Godliness at home

Much, though not all of the power of godliness, lies within doors. It is in vain to talk of holiness if we can bring no letters testimonial from our holy walking with our relations. Oh, it is sad when they that have reason to know us best, by their daily converse with us, do speak least for our godliness! Few so impudent as to come naked into the streets: if men have anything to cover their haughtiness they will put it on when they come abroad. But what art thou within doors? What care and conscience to discharge thy duty to thy near relations? He is a bad husband that hath money to spend among company abroad, but none to lay in provisions to keep his family at home. And can he be a good Christian that spends all his religion abroad, and leaves none for his nearest relations at home? That is, a great zealot among strangers, and little or nothing of God comes from him in his family? Yea, it were well if some that gain the reputation of Christians abroad, did not fall short of others that pretend not to profession in those moral duties which they should perform to their relations. There are some who are great strangers to profession, who yet are loving and kind in their way to their wives. What kind of professors then are they who are dogged and currish to the wife of their bosom? Who by their tyrannical lording it over them embitter their spirit, and make them cover the Lord's altar with tears and weeping? There are wives to be found that are not clamorous, peevish, and froward to their husbands, who yet are far from a true work of grace in their hearts; do they then walk as becomes holiness who trouble the whole house with their violent passions? There are servants who from the authority of a natural conscience, are kept from railing and reviling language, when reproved by their masters, and shall not grace keep pace with nature? Holy David knew very well how near this part of a saint's duty lies to the very heart of godliness; and therefore, when he makes his solemn vow to walk holily before God, he instanceth this, as one stage wherein he might eminently discover the graciousness of his spirit.

[Most likely from  William Gurnall's book, The Christian in Complete Armour]  Quoted in Charles Spurgeon's Treasury of David in the commentary on Psalm 101, verse 2: "I will walk within my house with a perfect heart."