This is love: not that we loved God, but that he loved us and sent his Son as an atoning sacrifice for our sins (1 John 4:10)

But God demonstrates his own love for us in this: while we were still sinners, Christ died for us (Rom. 5:8)

For I delivered to you as of first importance what I also received: that Christ died for our sins in accordance with the Scriptures, that he was buried, that he was raised on the third day in accordance with the Scriptures... (1 Cor. 15:3-4)

But when the goodness and loving kindness of God our Savior appeared, he saved us, not because of works done by us in righteousness, but according to his own mercy, by the washing of regeneration and renewal of the Holy Spirit, whom he poured out on us richly through Jesus Christ our Savior, so that being justified by his grace we might become heirs according to the hope of eternal life. (Titus 3:4-7)

God made him who knew no sin to be sin for us, that we might become the righteousness of God in him (2 Cor. 5:21)

God so loved the world that he gave his one and only Son, that whoever believes in him should not perish but have eternal life (John 3:16)