1 John 2:7-14 - The New Commandment
7 My dearly loved ones, I am not writing to you about a new commandment, but about an old one. [It is the one] you had learned about from the beginning. [Note: This is the commandment to love one another (3:1: II John 5) which Jesus had taught his disciples during His earthly ministry. See Mark 12:31]. This old commandment is the word [of God] which you heard [previously]. 8 Yet, I am [also] writing to you about a new commandment [Note: This commandment was to love one another as Jesus loved them. See John 13:34]; its truth is [being demonstrated] by Christ [perfectly] and [also] by you people [in a lesser measure], because the darkness [of sin] is passing away, and the real light [of righteousness] is already shining [in people's lives].
9 The person who claims to be living in [harmony with] the light [i.e., by obeying God's truth], and [yet] hates his brother is still [living] in the darkness [of sin]. 10 [However], the person who loves his brother continues to live in [harmony with] the light [of God's truth], and such a person is not the cause of others stumbling [over his example]. 11 But the person who hates his brother is in the darkness [of sin] and he lives in [harmony with] that darkness, and he does not know where he is heading, because the darkness [of sin] has blinded his eyes [to his spiritual condition].
12 I am writing to you, little children [i.e., dear ones], because you have been forgiven of your sins for [the sake of] Christ's name. 13 I am writing to you fathers, because you have known Him [i.e., Christ], [who has existed] from the beginning [See John 1:1]. I am writing to you young men, because you have overcome the [power of the] evil one [i.e., through faith they had gained victory over Satan, See 5:4]. 14 I have written to you little children [i.e., dear ones], because you have known the Father [as your God]. I have written to you fathers, because you have known Him [i.e., Christ], [who has existed] from the beginning. [See verse 13]. I have written to you young men, because you are [spiritually] strong and the word of God continues to live in your hearts, and you have overcome the [power of the] evil one [See verse 13].