How do we know that God chooses those He blesses?

The choice of God in blessing certain individuals is exemplified throughout the Bible. For instance, in Genesis 48, Jacob's blessing of Ephraim over Manasseh signifies God's sovereign selection. Hebrews 11:21 recounts this event as an act of faith, affirming that Jacob's actions were guided by God. Additionally, the Lord declared through Moses, 'I will be gracious to whom I will be gracious,' emphasizing that the initiative lies with God. This affirms that God's blessings are not a result of human striving but are rooted in His gracious and sovereign will.