Here is a post I found from the Poached Egg about sharing the Gospel with family over Christmas time and I found it quite helpful:
“Sometimes it is easier for us to share the gospel with someone that we don’t know in a different country, instead of those who know us the best. But how can we share our faith with family members who do not know Christ?
Christmas is a great time to talk about God’s greatest gift. Sometimes I hear people talk about a lot of spiritual activities or community or social action without ever mentioning Christ, but Jesus is the gospel (Romans 15:19). And at Christmastime, we can take several practical approaches with our loved ones that might open the door to a conversation about God. Here are several considerations:
1. Invite. During the holidays, invite your family members to a church service. Sometimes those who normally do not attend church will attend when invited by a friend or family member, especially during Christmas or Easter. Just ask them. The worst that can happen is that they say no.
2. Serve. Look for ways to serve your family around the holidays. Guys, instead of sitting around watching sports the whole time, look for opportunities to clean up the dishes or shovel the snow. These small acts of service can make a big impression.
3. Pray. Get alone sometime during your Christmas vacation and pray specifically for your family members by name. Ask the Holy Spirit to give you wisdom. One Christmas I really wanted to talk to my grandfather about Christ. I got alone on my knees and prayed for him. Later that night we had an in-depth thirty-minute conversation about Christ. He knew the Lord, but we just did not talk about it that much. This was our first really long spiritual conversation about Jesus. So I encourage you to pray.
4. Speak. Invitations to church, acts of service, and prayer are all ways to witness to your family, but there comes a time when the gospel needs to be verbally communicated. Be sensitive to timing and pray for guidance, and then start talking.”
Read the full post here.