KJV: And they said one to another, Did not our heart burn within us, while he talked with us by the way, and while he opened to us the scriptures?
NASB: They said to one another, "Were not our hearts burning within us while He was speaking to us on the road, while He was explaining the Scriptures to us?"
KJV: And a certain woman named Lydia, a seller of purple, of the city of Thyatira, which worshipped God, heard us: whose heart the Lord opened, that she attended unto the things which were spoken of Paul.
NASB: A woman named Lydia, from the city of Thyatira, a seller of purple fabrics, a worshiper of God, was listening; and the Lord opened her heart to respond to the things spoken by Paul.
KJV: Opening and alleging, that Christ must needs have suffered, and risen again from the dead; and that this Jesus, whom I preach unto you, is Christ.
NASB: explaining and giving evidence that the Christ had to suffer and rise again from the dead, and saying, "This Jesus whom I am proclaiming to you is the Christ."