Brotherly love requires that we have the same Father. God's love "agape love" reaches out to all people.
Rom 12:10 Be kindly affectioned one to another with brotherly love; in honour preferring one another;
Be as a families love and affection to one another in the Lord's family, with;
brotherly love - philadelphia - love of brothers or sisters, brotherly love in the NT the love which Christians cherish for each other as brethren
1Th 4:9 But as touching brotherly love ye need not that I write unto you: for ye yourselves are taught of God to love one another.
Heb 13:1 Let brotherly love continue.
1Pe 1:22 Seeing ye have purified your souls in obeying the truth through the Spirit unto unfeigned love of the brethren, see that ye love one another with a pure heart fervently:
in honour preferring one another;
Phil 2:4 Look not every man on his own things, but every man also on the things of others.
2 Cor 6:14 Be ye not unequally yoked together with unbelievers: for what fellowship hath righteousness with unrighteousness? and what communion hath light with darkness?
2 Cor 6:15 And what concord hath Christ with Belial? or what part hath he that believeth with an infidel?
2 Cor 6:16 And what agreement hath the temple of God with idols? for ye are the temple of the living God; as God hath said, I will dwell in them, and walk in them; and I will be their God, and they shall be my people.
2 Cor 6:17 Wherefore come out from among them, and be ye separate, saith the Lord, and touch not the unclean thing; and I will receive you,
Rom 5:5 And hope maketh not ashamed; because the love of God is shed abroad in our hearts by the Holy Ghost which is given unto us.
Affectionate brotherly love is for the family of God, we cannot be on the same level of affection with the unsaved, they do not have God's spirit, but we are to have compassion. We are to tell them about God's love for them and show them Jesus with prayers and kindness.
Jude 1:20 But ye, beloved, building up yourselves on your most holy faith, praying in the Holy Ghost,
Jude 1:21 Keep yourselves in the love of God, looking for the mercy of our Lord Jesus Christ unto eternal life.
Jude 1:22 And of some have compassion, making a difference:
Jude 1:23 And others save with fear, pulling them out of the fire; hating even the garment spotted by the flesh.