If Jesus and God are one why did God kill?

For starters, Jesus and Jehovah God are not the same individual, nor are they pieces of the same whole. The scriptures plainly state (in more than 1 spot) that the 2 of them are separate. Here's a few examples:

-Jesus had a beginning; He was created by Jehovah, which is why he has the title "Firstborn of all Creation". (Colossians 1:15; Proverbs 8:22) Jehovah on the other hand, had no beginning. This is why He has the title "King of Eternity". (1 Timothy 1:17)

-While on Earth, Jesus never made himself equal to Jehovah. (Philippians 2:6)

-Jehovah Himself said that Jesus was His son, not His equal. (Matthew 3:13-17; Mark 9:2-7)

-Jesus, even when returned to Heaven, still was subordinate to Jehovah...even with additional power given to him. And it's worthy of note that the scriptures state that everything was made subject to Christ...with the exception of Jehovah Himself, who gave Christ that authority. (1 Corinthians 15:24-28)

(New World Translation of the Holy Scriptures)