2 John 1:6 defines love as walking in God's commands, directly clarifying what the love command entails.

John 13:34 calls it a new commandment, while here John says it is not new but from the beginning — a contrast in perspective.

In John 15:12, Jesus gives this same command to love one another as He loved us — the original source of the commandment John cites.

In 1 Thessalonians 4:9, Paul says they are taught by God to love one another — showing this command is divinely instilled, not merely human.

In 1 Peter 1:22, loving one another fervently follows purification through truth — linking obedience to genuine love.

In 1 Peter 4:8, fervent love covers sins — adding a motive of forgiveness to the command to love one another.

In 1 John 2:7, the identical phrase 'no new commandment but from the beginning' appears, forming the basis for this appeal.

1 John 2:8 calls it a new commandment, contrasting with the 'not new' statement here, showing different emphases.

1 John 3:11 restates the same message of loving one another 'from the beginning', directly paralleling the command here.

In 1 John 3:14-18, loving one another proves passing from death to life and requires practical action — deepening the command.

1 John 3:23 pairs the love command with belief in Jesus, showing the two-part commandment from the beginning.

1 John 4:7-12 grounds the love command in God's nature — He first loved us, making love the defining mark of believers.

1 John 4:20 declares that hatred of a brother contradicts love for God, underscoring the seriousness of this command.

In Hebrews 13:1, the brief exhortation to let brotherly love continue echoes the same enduring command.

1 John 2:24 uses the same 'from the beginning' phrase for abiding in the gospel, linking to the love command's origin.

In 2 Peter 1:7, brotherly kindness and love are added to faith — showing love as a growth in virtue.