When Joshua addressed the Angel of the Lord he assumed God is taking sides. He was mistaken. The angel made it very clear when asked on whose side he is on: Israel’s or Israel’s enemies: The answer was: neither!
Let’s remember that before taking sides: God is on both sides. God is for you, and “you” means everybody. There is no exclusion in the kingdom of God. There is no hierarchy as we know it, no club of insiders versus excluded outsiders. The kingdom of God values every creature in this universe, including this hot spot called Planet Earth. God loves His angels, His vegetation, His animal kingdom, His people without a shred of favoritism. However, His capacity to love is grander than the universe because while He loves everything and everybody, He also uniquely loves singular you. We can relate to this fact if we look at our own relationships. You have a different connection to every person you know. That is the way God’s love operates.
The triune God can’t be divided. Neither can His children be divided. The body of Christ is one. Frictions in God’s kingdom are man-made and will definitely end in Heaven. Can you imagine Heaven divided? The beauty of Heaven is harmony with diversity. The lion and the lamb sit side by side. The nations of the world are talking to each other, hearing each other out, respecting each other. Everybody is fully loved, fully accepted, on the peak of potential, producing and contributing to the new world called Kingdom of Heaven. That is the future of mankind.