How do we know the favor of the Lord is true?

The favor of the Lord is evidenced by salvation granted to God's elect. Those who are favored by God—those who have been made righteous by Christ—will respond to His call and teachings, as highlighted in the scriptures. The cause and effect relationship is foundational; we are able to hear and obey because we are favored by Him. Ultimately, the assurance of His favor is rooted in the finished work of Jesus Christ on the cross, which secures our salvation and reconciliation with God, confirming His grace.