The eye is the lens through which we see the world, and through it, we form our perspectives of life. If we aim to please the world, by making visibile our charitable deeds, we withold the light and favour of God that should be our true reward.
Everything we do in secret will be rewarded. The Bible teaches us to pray and do good in secret, for our attention is not to find favor with the world but to stand righteous before Christ. If the world is the object of our faithfulness, our rewards will come from men. God is the rewarder, and He rewards those who seek Him in secret.
Our lens should not be to gather up treasures of this world but to live our lives according to the word of God. As Christians, we have the light of God within us and do not live to have the light of the world upon us. The eye is the lamp of our body, and if the eye is good and just, our bodies will be full of light. The world’s ways are filled with darkness, sorrow, and faithlessness, and if our perspective is to be accepted by men, we will hide the light of God within us.
If God is the central focus of everything we do, the light of Christ will automatically shine into the darkness of this world.