A sense of belonging is vital to any life. Jesus says "I am with you always" (Matthew 28:20, emphasis mine).
God wants to make sure that you feel part of something. More than that, He wants you to know you're part of what He's doing, His plan. David referred to it in Psalm 68 (verse 6). He says "God sets the solitary in families." When we accept Jesus, we were "grafted in" (Romans 11:17) to God's family. That means that in the tree of God's family, He did something akin to the opposite of pruning. He attached us to the root and branch of that tree. When He approached Abraham in Genesis (17:4) and told Him He would make him a "father of many nations", God effectively began a holy genealogy with him, planting a tree that would branch out across the strata of time and place and bear fruit and here you are.
But with Jesus, everything went inward, invisible. Jesus made it possible for us to become children of God in a truer sense than by blood alone. Anyone who is Jewish understands their heritage. They don't have to think twice about where they're from and how their lineage flows back to Jacob and his grandfather Abraham. It's ingrained, encoded. With Christians, it should be—and is—just as solid. We are God's children because of Jesus' sacrifice and resurrection. Jesus made it possible for our spirit to be recreated, remade just like His. And this is how the whole schema (plan) went public—outward. Jesus invites everyone—Jews and Gentiles (anyone who's not Jewish)—to come to Him and be part of what He's doing. Be a part of His family.
Because Christianity is based in faith—faith that evolves into knowing—many Christians will go through an identity crisis at some point in their life. Maybe crises, until they get this fact down: We are related to God now with a bond that is stronger than blood. How often have you wondered whether or not you were a name-carrying member of your family? I guarantee you no one who is Jewish doubts their heritage. Understand that because of what Jesus did, we now carry His name as part of our heritage. It's who we are at the very deepest level of our very being.
Jesus "will never leave us nor forsake us" (Hebrews 13:5). In Psalm 27, verse 10 David declares: "when my mother and father forsake me, then the Lord will take me up." If you've ever struggled with abandonment issues, take heart! Proverbs (18:24) says: "there is a friend that sticks closer than a brother". Jesus is that friend, ladies and gentlemen.
Go into the highways and byways and let people know: there's a seat at the table reserved for them. Be that friend that someone needs and make them feel the sense of belonging that God has given to you. The world needs this.