The reality of the Trinity is key to understanding why the Father could send the Son to die: They are the same Person.

⁹ Jesus answered: “Don’t you know me, Philip, even after I have been among you such a long time? Anyone who has seen me has seen the Father. How can you say, ‘Show us the Father’? John 14:9
³⁰ I and the Father are one.” John 10:30

Article 2 of the Baptist Faith & Message is what we believe about God:

II. God

There is one and only one living and true God. He is an intelligent, spiritual, and personal Being, the Creator, Redeemer, Preserver, and Ruler of the universe. God is infinite in holiness and all other perfections. God is all powerful and all knowing; and His perfect knowledge extends to all things, past, present, and future, including the future decisions of His free creatures. To Him we owe the highest love, reverence, and obedience. The eternal triune God reveals Himself to us as Father, Son, and Holy Spirit, with distinct personal attributes, but without division of nature, essence, or being.

A. God the Father

God as Father reigns with providential care over His universe, His creatures, and the flow of the stream of human history according to the purposes of His grace. He is all powerful, all knowing, all loving, and all wise. God is Father in truth to those who become children of God through faith in Jesus Christ. He is fatherly in His attitude toward all men.

Genesis 1:1; 2:7; Exodus 3:14; 6:2-3; 15:11ff.; 20:1ff.; Leviticus 22:2; Deuteronomy 6:4; 32:6; 1 Chronicles 29:10; Psalm 19:1-3; Isaiah 43:3,15; 64:8; Jeremiah 10:10; 17:13; Matthew 6:9ff.; 7:11; 23:9; 28:19; Mark 1:9-11; John 4:24; 5:26; 14:6-13; 17:1-8; Acts 1:7; Romans 8:14-15; 1 Corinthians 8:6; Galatians 4:6; Ephesians 4:6; Colossians 1:15; 1 Timothy 1:17; Hebrews 11:6; 12:9; 1 Peter 1:17; 1 John 5:7.

John tells us in 1 John 4:8 that “God is love.” God is also righteous. Everything He does is right. He is our standard for right living, goodness, and love. His is a self-giving love. We cannot live up to any standard of righteousness without Him. He knows this and has offered everyone the opportunity for Him to come and live in them, help them, guide them, and transform them into complete righteousness (the image of His Son, Jesus). God “is patient with you, not wanting anyone to perish, but everyone to come to repentance” (2 Peter 3:9). This is God the Father, who longs for each of His prodigal children to return home (Luke 15:11-24).

Aren’t you glad you did?

Abba, I find it amazing that You have made a way for us to be Your children, in right-standing with You, and eligible to inherit Your kingdom with our Brother, Jesus Christ (Romans 8:14-17). May we bask in Your love, Your righteousness, Your joy, and Your peace. Thank You, thank You, thank You, Abba. You’re the best! Amen.