46 For if you love those who love you, what reward have you? Do not even the tax collectors do the same? 47 And if you greet your brethren only, what do you do more than others? Do not even the tax collectors do so? 48 Therefore you shall be perfect, just as your Father in heaven is perfect. (Matthew 5:46–48, NKJV)
The devil is delighted when Christians do not love one another. He also takes delight when Christians do not love their enemies. Jesus said, “Love your enemies, bless those who curse you, do good to those who hate you, and pray for those who spitefully use you and persecute you” (Matthew 5:44). God is “perfect” in verse 48 because He does precisely that – He loves His enemies. “But God demonstrates His own love toward us, in that while we were still sinners, Christ died for us” (Romans 5:8). The word “perfect” in today’s passage (verse 48) conveys completeness, being of full age or maturity. Our love is not complete if we do not love our enemies. We love our enemies by showing them active goodwill, even though they are actively showing ill will toward us (see Matthew 5:44). Loving only those who love us is the world’s model of love. Loving your enemies is what God does toward the whole world. Citizens of the kingdom of heaven model themselves after God’s love, not the world’s incomplete, immature love.