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Et sic de similibus references:

Set your affection on the things of Heaven where Jesus sits on the Right Hand of God; not on the things of the earth.
Col 3:
2 Set your affection on things above, not on things on the earth.

Seek for a Heavenly crown instead of some earthly gain.
Mat 6:
31 Therefore take no thought, saying, What shall we eat? or, What shall we drink? or, Wherewithal shall we be clothed?
32 (For after all these things do the Gentiles seek:) for your heavenly Father knoweth that ye have need of all these things.
33 But seek ye first the kingdom of God, and his righteousness; and all these things shall be added unto you.

Seek to be a soldier in the army of truth instead of a soldier of fortune and fame.
Hbr 6:
10 For God [is] not unrighteous to forget your work and labour of love, which ye have shewed toward his name, in that ye have ministered to the saints, and do minister.

All the wealth you have gained on earth you will lose and its accumulation will bring you into judgement.
Luk 6:
24 But woe unto you that are rich! for ye have received your consolation.

All that you lose on earth for Christ's sake will cause you to gain in Heavenly rewards and will add God's mercy to your present life.
Mar 8:
35 For whosoever will save his life shall lose it; but whosoever shall lose his life for my sake and the gospel's, the same shall save it.

Brethren, it is so sad to see so many Christians selling their souls for the proverbial Esau's bowl of boiled pottage of lentils.
Gen 25:
34 Then Jacob gave Esau bread and pottage of lentils; and he did eat and drink, and rose up, and went his way: thus Esau despised [his] birthright.

Brethren, are you selling your Heavenly heritage for the want of some earthly gain?
Mar 8:
36 For what shall it profit a man, if he shall gain the whole world, and lose his own soul?

Personal gain is not godliness.
1Ti 6:
3 If any man teach otherwise, and consent not to wholesome words, [even] the words of our Lord Jesus Christ, and to the doctrine which is according to godliness;
4 He is proud, knowing nothing, but doting about questions and strifes of words, whereof cometh envy, strife, railings, evil surmisings,
5 Perverse disputings of men of corrupt minds, and destitute of the truth, supposing that gain is godliness: from such withdraw thyself.
6 But godliness with contentment is great gain.
7 For we brought nothing into [this] world, [and it is] certain we can carry nothing out.
8 And having food and raiment let us be therewith content.