I present the hypothetical situation in light of today's attitude of 'tolerance'... and the fine line between loving the sinner and hating the sin. The relationship that began as adultery was never repented of and ended a legitimate marriage. The person being asked to attend the ceremony is the believer (whose daughter is the 'bride-to-be'). Do you feel the believer is endorsing the sinful relationship by attending? Or, do you feel attending shows love to the daughter, in hopes she will sense this and repent as the Holy Spirit continues His work of conviction? If you can provide scripture for your reasoning, that would be great. It's a sad thing to see that no longer is it enough to give people their right to make choices, they also want others to join in and 'validate' their sin. I appreciate the responses.