Luke 8:16-18 in the King James Version states:

"No man, when he hath lighted a candle, covereth it with a vessel, or putteth it under a bed; but setteth it on a candlestick, that they which enter in may see the light. For nothing is secret, that shall not be made manifest; neither any thing hid, that shall not be known and come abroad. Take heed therefore how ye hear: for whosoever hath, to him shall be given; and whosoever hath not, from him shall be taken even that which he seemeth to have."

In this passage, Jesus is speaking to his disciples about the responsibility of properly using the light of the Word of God that has been given to them. He uses the analogy of a candle to illustrate spiritual truth. Just as a candle is not meant to be hidden, but rather to be placed on a candlestick to give light to all who enter, so too should the disciples not hide or neglect the light of God's truth that has been revealed to them.

The primary theme of this passage is the responsibility that comes with the knowledge of God's Word. Jesus emphasizes that the light of the Gospel is not given to be kept hidden or obscured, but rather to be openly displayed for all to see and benefit from. This underscores the importance of sharing the good news of Jesus Christ, and living a life that reflects the truth of the Gospel.

The context of this passage is important in understanding its meaning. In the preceding verses, Jesus tells the parable of the sower, explaining the different ways in which the Word of God is received and how it impacts people's lives. He then goes on to explain the purpose of parables and the importance of understanding and applying the truth that has been revealed.

The symbolism of the candle is significant in this passage. The light of the candle represents the truth and knowledge of God's Word. Just as a candle illuminates a room and dispels darkness, so too does the Word of God bring illumination and understanding to those who receive it. The candlestick represents the platform or opportunity for the Word to be displayed and shared with others. Jesus is urging his disciples to be bold and unashamed in their proclamation of the Gospel, and to actively seek opportunities to share the light of God's truth.

The imagery of uncovering what is hidden and revealing what is secret points to the fact that nothing can remain hidden from God. This serves as a warning to those who would seek to keep the truth of the Gospel hidden or suppressed. Jesus emphasizes that all will be made known and brought to light in due time.

Finally, Jesus concludes with a cautionary statement about the principle of stewardship. Those who have been given the light of God's Word are responsible for how they use and share it. Those who hear and receive the Word with an open heart will be given even more, while those who neglect or reject it will lose even what they initially seemed to have.

In summary, Luke 8:16-18 serves as a powerful reminder of the responsibility that comes with the knowledge of God's Word. It calls on believers to actively share and proclaim the truth of the Gospel, and to be faithful stewards of the light that has been given to them. The passage also serves as a warning about the consequences of neglecting or suppressing the truth of God's Word. Ultimately, it encourages believers to live in a way that reflects the light of Christ and to be bold and unashamed in sharing the good news with others.