That question was asked of Jewish people in Israel. Check out this answer:

Friends, one of the most important ways to stand with Israel is in prayer for their salvation. The few but mighty Messianic believers in Israel willing to share their faith are going out on a limb to do so! So Be It, a ministry of Jews for Jesus, is on the front lines, talking to Jews in Israel and telling them about the wonderful news of Jesus Christ.

Will you stop right now and pray for eyes and hearts to be open to see and know the Gospel of Jesus Christ? Then, please set the reminder on your watch to remind you to do so again at intervals throughout the day.

Imagine the impact if every Christian who reads this actually participates! We will affect changes we never knew possible.