“The Spirit himself bears witness with our spirit that we are children of God” (v16). No longer under the law or slaves of sin, we now are “children of God,” and “fellow heirs” with Christ. Our spirits have been reborn, and we look forward to the resurrection of our bodies so that we can enjoy a future life in God’s renewed world (v21-23). For now, Paul says, we follow Christ’s example: “we suffer with him so that we may be glorified with him” (v17).
Being God’s beloved sons and daughters means, like Jesus himself, accepting that suffering may precede resurrection. “In all these things we are more than conquerors through him who loved us” (v37).