How do we know that God's grace makes a difference between people?

The Bible teaches that God's grace creates a fundamental distinction between the righteous and the wicked. In Exodus 11:7, it states, 'The Lord doth put a difference between the Egyptians and Israel,' highlighting that these differences stem from God's sovereign choice and grace. This distinction is not based on human merit or works, as seen in Romans 9, where God states, 'Jacob have I loved, but Esau have I hated' (Romans 9:13). The covenant promises and electing grace were bestowed upon Israel, signifying that God’s selection is based solely on His purpose and will. Ephesians 1:5 reinforces this by indicating we have been 'predestinated unto the adoption of children by Jesus Christ to Himself, according to the good pleasure of His will.' Such distinctions are secured by God's infinite grace, further assuring believers of their salvation.