If I may ask a follow-up question please in regard to my previous “vows and cards” question. I thank you for the response. One doubt remains in my heart. What about verses like Psalm 15:4? Even though my understanding has changed about the permissibility of card games, should I not still keep a promise made to the Lord? Thank you for your wise counsel.
The immediate context of the verse you cited is the child of God’s interactions with other people: not speaking evil of them (verse three) and using money for their good (verse five). It would be wrong to make a promise to another person and then break it (verse four).
Your promise to God was a matter of misinterpreting his will for your life. Recognizing your Christian freedom (Galatians 5:1), you are free to participate in the activity you mentioned.