How do we know the teachings about love in the Bible are true?

The truth of biblical teachings on love is supported by multiple scriptural references and the lived example of Jesus Christ. For instance, in 1 John 4:19 it says, 'We love because He first loved us.' This underscores that the foundation of our love comes from God’s love for us. Moreover, the consistency of love being emphasized throughout the New Testament as a key commandment, coupled with Christ’s sacrificial love demonstrated on the cross, assures believers of the truth in these teachings. Thus, love is both the evidence of our faith and a reflection of God’s character.