Eliphaz was not the sharpest knife in the drawer, but he made an astute observation about investing.
Job 15:31
Let him not deceive himself by trusting what is worthless,
for he will get nothing in return.
Be skeptical if investment opportunities come with guaranteed high returns and low or no risks. The return is that it goes from your pocket to theirs.
Let me give you some strong advice. The things invested in eternity will never lose their reward.
Colossians 3:23-24
Whatever you do, work heartily, as for the Lord and not for men, knowing that from the Lord you will receive the inheritance as your reward. You are serving the Lord Christ.
Ephesians 6:8
Knowing that whatever good anyone does, this he will receive back from the Lord, whether he is a bondservant or is free.
Give it some thought and then start investing.
Gary