Every action we take in life has its reward, when we put efforts into developing our skills, it may not yield immediate result, but will some time if we don't give up. The same way we may not see the result of our continuous wickedness on time, but with time it will definitely show up.

God was speaking to Jeremiah, an old Prophet in the land of Judah, He said:


"The human heart is the most deceitful of all things, and desperately wicked. Who really knows how bad it is? But I, the Lord, search all hearts and examine secret motives. I give all people their due rewards, according to what their actions deserve" Jeremiah 17: 9-10

Source: http://citofgod..com.ng/2017/01/all-our-actions-has-reward.html