National Love
There is a rational love to Christ, which, without these sensible emotions felt in the former case, evidences itself by a dutiful regard to the divine authority and command. When one bears such a love to Christ, though the vehement strings of affection be wanting, yet he is truly tender of offending a gracious God; endeavours to walk before him unto all well pleasing; and is grieved at the heart for what is displeasing unto him, 1 John 5:3, “For this is the love of God, that we keep his commandments.” Now, although that sensible love does not always continue with you, you have no reason to deem it a hypocritical fit, while the rational love remains with you; any more than a loving and faithful wife needs question her love to her husband, when her fondness is abated.
Thomas Boston, The Whole Works of Thomas Boston: Human Nature in Its Fourfold State and a View of the Covenant of Grace, ed. Samuel M‘Millan, vol. 8 (Aberdeen: George and Robert King, 1850), 166.