Because

2 Chronicles 9:8
Blessed be the LORD your God, who has delighted in you to set you on His throne to be king for the LORD your God. Because your God loved Israel enough to establish them forever, He has made you king over them to carry out justice and righteousness."

Deuteronomy 7:7, 8
The LORD did not set His affection on you and choose you because you were more numerous than the other peoples, for you were the fewest of all peoples. . . .

1 Kings 10:9
Blessed be the LORD your God, who has delighted in you to set you on the throne of Israel. Because of the LORD's eternal love for Israel, He has made you king to carry out justice and righteousness."

Psalm 72:17
May his name endure forever; may his name increase as long as the sun shines. In him may all nations be blessed; may they call him blessed.