The theological trinitarian starting point that God is love comprising within Himself the fullness of relationships between the three divine persons leads to the conclusion that the basic feature of God as the most perfect communion is solidarity in creation, in redemption and in the generation of a new solidarity of everything created, especially man, within the communion of the Holy Trinity having its aim in a new heaven and a new earth. The inner solidarity within the Trinity reveals itself as the Father's solidarity in creation, the Son's solidarity in redemption and the Holy Spirit's solidarity in santification. Man's creational godlikeness is an expression of the solidarity of God the Father with every man, which establishes man's dignity and his ability to co-create the world. The creational solidarity with man is extended by the incarnation (kenosis) of God the Son, who shows solidarity with each and every man by becoming like men in everything except sin, by becoming "God with us". His style of life "for others", serving the poor in the conditions of the created world marked by vulnerability, mortality and sin, is an expression of solidary love. Divine solidarity reaches its peak when Jesus Christ adopts the fate of a victim of the sinful humanity in humiliation and in an unjust and shameful death. Thereby he "who had no sin [became] sin for us, so that in him we might become the righteousness of God" (2 Cor 5: 21). Since the Son of God showed a complete solidarity with the humanity, God the Father showed his solidarity with the suffering and dying Jesus in such a way that, through the Holy Spirit, he raised him from the dead and gave him eternal life and glory. The risen and glorified Lord demonstrates his solidarity by the action of the Holy Spirit in the hearts of the faithful as he awakens within them an openness for the solidarity with their brothers and sisters as well as with nature so that they may build together the harmony that will achieve its fullness at the times of fulfilment.
