I’ve pondered this for a while so as to avoid rushing forward with a response. However, I believe a response is required.
God the Father did not kill His Son. Adam did. Adam killed the entire human race by following the devil into the temptation of believing in free will and choosing death for us all.
In John 3 Jesus explains that God so loved the world that He gave His only-begotten Son, that whosoever believeth in him should not perish, but have everlasting life. God gave His Son. But Jesus, the Son of God and Son of Man was not killed by the Father.
Luke records the death of Jesus, saying: “And when Jesus had cried with a loud voice, he said, Father, into thy hands I commend my spirit: and having said thus, he gave up the ghost.”
John records the words of Jesus as He prepared to go to Gethsemane and the cross: “As the Father knoweth me, even so know I the Father: and I lay down my life for the sheep. And other sheep I have, which are not of this fold: them also I must bring, and they shall hear my voice; and there shall be one fold, and one shepherd. Therefore doth my Father love me, because I lay down my life, that I might take it again. No man taketh it from me, but I lay it down of myself. I have power to lay it down, and I have power to take it again. This commandment have I received of my Father.” (John 10:15-18)
Isaiah prophesies, saying:
Yet it pleased the Lord to bruise him; he hath put him to grief: when thou shalt make his soul an offering for sin, he shall see his seed, he shall prolong his days, and the pleasure of the Lord shall prosper in his hand. (Isaiah 53:10)
or as the ESV translates: “Yet it was the will of the Lord to crush him; he has put him to grief; when his soul makes an offering for guilt, he shall see his offspring; he shall prolong his days; the will of the Lord shall prosper in his hand.”
By placing our guilt upon Jesus, the LORD crushed Him. Who IS the LORD?
In the garden of Gethsemane, Jesus cried out to the Father with the answer that they had already established from eternity. As the Son of Man, with a fully human soul, weighted down with our iniquity, Jesus cried out begging for what He already knew could not be, thus asking not that the cup be removed, but that the Father would strengthen Him to go forward with the commission that He freely embraced from eternity.
The Father did not kill the Son. The Father gave the Son, who willingly laid down His life for us. Those who rejected the Son crucified Him and killed Him, but only by the will of the entire Godhead, and by the willing humbling unto death of the Son. The Son willingly offered Himself in our stead, in accord with the will of the Father and the Spirit.
This is the Father that you need to proclaim to your daughters. This Father does not kill His children. He leads us, as He did Jesus, to the mercy seat. He leads us to face death without fear, knowing that He will never abandon us. Sin is what separates us from God. Sin even darkened the world to such an extent that Jesus cried out as one abandoned in sin-blindness. But the Father was pleased with the sacrifice that His Son made for us, smiling as His Son went joyfully to the cross carrying our sin and guilt in His own body, sin that was not His own and had no power over Him. The Father did not kill the Son, but lovingly accepted His sacrifice on our behalf. Truly, through the entire ministry, including the six hours on the cross, the Father gleamed with pride and continued with His proclamation, “This is My beloved Son in whom I am well-pleased.”
And now, because of Jesus, He can say the same of all who are baptized into the Holy Communion of the Holy Trinity.