The bad news is that we have all sinned and fall short of the glory of God, and the punishment for sin is death.
The good news is that the gift of God is eternal life in Christ Jesus our Lord. God demonstrates His own love for us in this: while we were still sinners, Christ died for us. If you confess with your mouth, "Jesus is Lord", and believe in your heart that God raised Him from the dead, you will be saved, for everyone who calls on the name of the Lord will be saved.
There is a series of verses in Romans that provides a succinct explanation of the Good News of Jesus. This painting depicts the progression of those verses and serves as a memory prompt.
The entire population of the world has a problem: All have sinned... (Romans 3:23a).
The figure on the left represents all people with his "earth" skull.
Because we have all sinned, we fall short of God's glory. (Rom. 3:23b)
The figure on the right is depicted falling short of God's glory - he has failed to reach the finish line which represents the glory of God. The ground represents a running track stained blood-red.
The wages of sin is death... (Rom. 6:23a). The human figure is dying. He is basically a skeleton. Wages are something that we earn, but all we earn from sin is eternal death (separation from God).
God wants to give us something we don't deserve, that is, eternal life.
... but the gift of God is eternal life in Christ Jesus our Lord. (Rom. 6:23b)
While we were still sinners, Christ died for us. (Rom. 5:8)
The lamb represents Jesus, the Lamb of God who takes away the sin of the world. In the painting, the lamb's blood is being spilt and offering life to the dying figure.
Jesus is represented by the lamb: John said, "Look, the Lamb of God, who takes away the sin of the world!" (Jn. 1:29).
If you confess with your mouth, "Jesus is Lord", and believe in your heart that God raised Him from the dead, you will be saved. (Rom. 10:9)
The dying figure is using his last breath to confess that Jesus is Lord.
Anyone who calls on the name of the Lord will be saved. (Rom. 10:13)
God is reaching down from the cross (which becomes an arm), and grasping the hand of the figure to effect his salvation as the human figure accepts it. Life is returning to the figure. Colour is emanating from the cross into his arm, and the flesh is returning to his face. The figure's eye has its life returning to it as he looks toward God for his salvation.
Disclaimers:
Sorry it is graphic, but the crucifixion of Jesus on the cross was graphic, as depicted in the bible. Isaiah says that He was despised, smitten, afflicted, scourged, crushed, pierced and cut off. (Is. 53. See also Jn. 19:18, 34). Sin is ugly, and so is death. David said his sin caused him to groan and to feel crushed, and his wounds to grow foul and fester. (Ps. 38). For the theological sticklers: I am one too. I know Jesus is not still on the cross. He was raised to life on the third day and is alive! I am not a proponent of crucifixes. This is just a creative paraphrase to serve as a memory prompt for Romans 3:23, 6:23, 5:8, 10:9 and 10:13.