1. The reality of love: God and Christ (1 Co 13:8-12)
    1 Jn 4:8, 1Jn 4:10, 16-17, Jn 3:16, Jn 15:13, Eph 5:2, 1 Jn 3:16, Rom 5:8

God is love. And that love made His only begotten Son a propitiation for us. (1 Jn 4:8,10,16-17, Jn 3:16)

1 Jn 4:8 He that loveth not knoweth not God; for God is love.
10 Herein is love, not that we loved God, but that he loved us, and sent his Son to be the propitiation for our sins.
16 And we have known and believed the love that God hath to us. God is love; and he that dwelleth in love dwelleth in God, and God in him.
17 Herein is our love made perfect, that we may have boldness in the day of judgment: because as he is, so are we in this world.

Jn 3:16 For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.

Christ is love. He gave His life to save us. (Jn 15:13, Eph 5:2, 1 Jn 3:16, Rom 5:8)

Jn 15:13 Greater love hath no man than this, that a man lay down his life for his friends.

Eph 5:2 And walk in love, as Christ also hath loved us, and hath given himself for us an offering and a sacrifice to God for a sweetsmelling savour.

1 Jn 3:16 Hereby perceive we the love of God, because he laid down his life for us: and we ought to lay down our lives for the brethren.

Rom 5:8 But God commendeth his love toward us, in that, while we were yet sinners, Christ died for us.

God and Christ are the substance of love. On that day we will see God and Jesus. (1 Cor 13:8-12)

1 Cor 13:8 Charity never faileth: but whether there be prophecies, they shall fail; whether there be tongues, they shall cease; whether there be knowledge, it shall vanish away.
9 For we know in part, and we prophesy in part.
10 But when that which is perfect is come, then that which is in part shall be done away.
11 When I was a child, I spake as a child, I understood as a child, I thought as a child: but when I became a man, I put away childish things.
12 For now we see through a glass, darkly; but then face to face: now I know in part; but then shall I know even as also I am known.