ISB ~ Acts 16 v14

Lydia:A reputable businesswoman and possibly a widow.

worshiper of God:Lydia was a righteous Gentile or “God-fearer” attracted to Judaism. See note on Acts 10:2.

opened her heart:Faith in the gospel is a gift from God, who prepares the heart and mind of every believer with the grace needed to embrace the message (Jn 6:44; Eph 2:8).