"And the light shines in the darkness, and the darkness did not comprehend it." (Jn. 1:5)
"The light shines" is in simple present tense; the darkness did not comprehend it is in past tense (in Greek, aorist). This is a testimony about Jesus Christ.
1. It points to the eternality of Christ, the light, who always shines, has always shone, and will always shine. There is no shadow of turning in Him. Yesterday and tomorrow are as today for Him. Therefore, His voice through the Spirit is always in the today.
2. It points to the defeat point of darkness as in the past. There is no present or future possibility left for darkness. The Scripture does not say " The darkness will not comprehend"; it says that it did not comprehend. In other words, the defeat of darkness is a finished fact. Christians must rest assured that it is impossible for darkness to ever gain the upper hand. Its defeat is over forever.
3. It points to the fact that those who love darkness can never come to the light. In order to walk in light, we must first long for the light.
"And this is the condemnation, that the light has come into the world, and men loved darkness rather than light, because their deeds were evil. For everyone practicing evil hates the light and does not come to the light, lest his deeds should be exposed. But he who does the truth comes to the light, that his deeds may be clearly seen, that they have been done in God." (Phil. 3:19-21)