Adam Clarke

Set your affection on things above - Τα ανω φρονειτε· Love heavenly things; study them; let your hearts be entirely engrossed by them. Now, that ye are converted to God, act in reference to heavenly things as ye did formerly in reference to those of earth; and vice versa. This is a very good general rule: "Be as much in earnest for heavenly and eternal things, as ye formerly were for those that are earthly and perishing."