Mark 10:29-30 NIV

29 “Truly I tell you,” Jesus replied, “no one who has left home or brothers or sisters or mother or father or children or fields for me and the gospel 30 will fail to receive a hundred times as much in this present age: homes, brothers, sisters, mothers, children and fields—along with persecutions—and in the age to come eternal life.

koinos - "common"
koinonia - "participation, fellowship, communion"

2 Corinthians 13:14 NIV
14 May the grace of the Lord Jesus Christ, and the love of God, and the fellowship of the Holy Spirit be with you all.

Romans 5:5 NIV

5 And hope does not put us to shame, because God’s love has been poured out into our hearts through the Holy Spirit, who has been given to us.

Discovering connection results in a deep affection for our brothers and sisters.

1 Thessalonians 2:17 NIV
17 But, brothers and sisters, when we were orphaned by being separated from you for a short time (in person, not in thought), out of our intense longing we made every effort to see you.

Discovering connection results in a commitment to family unity.

1 Corinthians 1:10 NIV
10 I appeal to you, brothers and sisters, in the name of our Lord Jesus Christ, that all of you agree with one another in what you say and that there be no divisions among you, but that you be perfectly united in mind and thought.

Discovering connection results in a desire to serve one another in love.

1 John 3:16 NIV
16 This is how we know what love is: Jesus Christ laid down his life for us. And we ought to lay down our lives for our brothers and sisters.

"Look," they say, "how they love one another and how they are ready to die for each other." - Tertullian (2nd Century Church Father)