1 John 2:3-5 (KJV) states, "And hereby we do know that we know him if we keep his commandments. He that saith, I know him, and keepeth not his commandments, is a liar, and the truth is not in him. But whoso keepeth his word, in him verily is the love of God perfected: hereby know we that we are in him."

This passage is taken from the First Epistle of John, which is attributed to the apostle John, one of the twelve disciples of Jesus. This epistle is believed to have been written between 85-95 AD and was addressed to a community of believers in Asia Minor. The purpose of the letter was to address the issue of false teachers and to encourage believers to abide in the truth and love of Christ.

In these verses, John emphasizes the importance of obedience to God's commandments as the evidence of genuine knowledge of and relationship with God. The passage begins with the phrase "And hereby we do know that we know him if we keep his commandments," which suggests that obedience to God's commandments is the litmus test for one's knowledge of and relationship with Him. This implies that true knowledge of God is not merely intellectual, but it is also demonstrated through one's actions and obedience to His word.

John then contrasts genuine knowledge of God with mere claims or professions of knowing Him. He states, "He that saith, I know him, and keepeth not his commandments, is a liar, and the truth is not in him." Here, John unequivocally denounces the hypocrisy of claiming to know God while living in disobedience to His commandments. He asserts that such a person is not only deceitful but also lacks the truth that should be inherent in genuine knowledge of God.

The passage culminates with the affirmation that those who keep God's word have the love of God perfected in them, and by this, they can truly know that they are in Him. This implies that obedience to God's word is intimately linked to the perfection of God's love within the believer. It is a transformative process where the love of God is demonstrated and realized through faithful adherence to His commands.

Overall, this passage emphasizes the inseparable connection between knowledge of God, obedience to His commandments, and the manifestation of His love within the believer. It underscores the idea that genuine knowledge of God is evidenced by a life that is characterized by obedience to His word and by the love of God being perfected within the believer.

The themes present in this passage include the nature of true knowledge of God, the importance of obedience to His commandments, the manifestation of God's love through obedience, and the authenticity of one's relationship with God. These themes are particularly relevant in the context of the challenges faced by the early Christian community, where false teachings and moral relativism posed a threat to the purity and integrity of the faith.

The symbolism in this passage lies in the contrast between true knowledge of God and mere profession of knowing Him. The imagery of light and darkness, truth and falsehood, love and disobedience, are employed to illustrate the stark contrast between genuine knowledge of God and superficial claims of knowing Him. The symbolism of light and darkness, which is prevalent in the writings of John, serves to convey the idea of moral clarity and purity that comes from obedience to God's commandments, as opposed to the deception and falsehood of claiming to know God while living in disobedience.

In conclusion, 1 John 2:3-5 presents a profound and timeless message about the nature of true knowledge of God, the importance of obedience to His commandments, and the manifestation of His love within the believer. It challenges us to examine the authenticity of our relationship with God and to strive for a life that is characterized by obedience and the perfection of God's love within us. This passage continues to serve as a guiding principle for believers, reminding us that genuine knowledge of God is demonstrated through a life of faithful obedience and the embodiment of His love.