Whether God loves me
I believe it about everyone else.
By giving up his own Son for our sins, God manifests that his plan for us is one of benevolent love, prior to any merit on our part: "In this is love, not that we loved God but that he loved us and sent his Son to be the expiation for our sins." I John 4:10; 4:19. God "shows his love for us in that while we were yet sinners Christ died for us." Rom 5:8.
At the end of the parable of the lost sheep Jesus recalled that God's love excludes no one: "So it is not the will of your Father who is in heaven that one of these little ones should perish." Mt 18:14. He affirms that he came "to give his life as a ransom for many"; this last term is not restrictive, but contrasts the whole of humanity with the unique person of the redeemer who hands himself over to save us. Mt 20:28; cf. Rom 5:18-19. The Church, following the apostles, teaches that Christ died for all men without exception: "There is not, never has been, and never will be a single human being for whom Christ did not suffer." Council of Quiercy (853): DS — Denzinger–Schönmetzer (Enchiridion Symbolorum); cf. 2 Cor 5:15; I Jn 2:2.
In the course of its history, Israel was able to discover that God had only one reason to reveal himself to them, a single motive for choosing them from among all peoples as his special possession: his sheer gratuitous love. Cf. Dt 4:37; 7:8; 10:15. and thanks to the prophets Israel understood that it was again out of love that God never stopped saving them and pardoning their unfaithfulness and sins. Cf. Is 43:1-7; Hos 2.
God's love for Israel is compared to a father's love for his son. His love for his people is stronger than a mother's for her children. God loves his people more than a bridegroom his beloved; his love will be victorious over even the worst infidelities and will extend to his most precious gift: "God so loved the world that he gave his only Son." Jn 3:16; cf. Hos 11:1; Is 49:14-15; 62:4-5; Ezek 16; Hos 11.
God's love is "everlasting": Is 54:8. "For the mountains may depart and the hills be removed, but my steadfast love shall not depart from you." Is 54: 10; cf. 54:8. Through Jeremiah, God declares to his people, "I have loved you with an everlasting love; therefore I have continued my faithfulness to you." Jer 31:3.
But St. John goes even further when he affirms that "God is love": l Jn 4:8, 16 God's very being is love. By sending his only Son and the Spirit of Love in the fullness of time, God has revealed his innermost secret: Cf. I Cor 2:7-16; Eph 3:9-12. God himself is an eternal exchange of love, Father, Son and Holy Spirit, and he has destined us to share in that exchange.