Preach earnestly the love of God in Christ Jesus, and magnify the abounding mercy of the Lord; but always preach it in connection with His justice. Do not extol the single attribute of love in the method too generally followed, but regard love in the high theological sense, in which, like a golden circle, it holds within itself all the divine attributes: for God were not love if He were not just, and did not hate every unholy thing. Never exalt one attribute at the expense of another. Let boundless mercy be seen in calm consistency with stern justice and unlimited sovereignty. The true character of God is fitted to awe, impress, and humble the sinner: be careful not to misrepresent your Lord.
Charles Spurgeon, Lectures to My Students, p. 340