Our election is in Jesus Christ. Election is a mystery and only God understands it but by faith we rely on God and his love to bring us home to heaven through the Son by the Holy Spirit. The reason why we can never understand it (but are able to enjoy it through gratitude to a God of love); is because these decisions were done on the infinite line of the knowledge of God within the economy of God. Even quantum computers or artificial intelligence cannot penetrate into this wisdom.