Revelation 7:4 (New International Version)
4Then I heard the number of those who were sealed: 144,000 from all the tribes of Israel.
Revelation 7:9-10 (New International Version)
9After this I looked and there before me was a great multitude that no one could count, from every nation, tribe, people and language, standing before the throne and in front of the Lamb. They were wearing white robes and were holding palm branches in their hands. 10And they cried out in a loud voice:
“Salvation belongs to our God, who sits on the throne, and to the Lamb.”
Romans 14:5-6 (New International Version)
5One man considers one day more sacred than another; another man considers every day alike. Each one should be fully convinced in his own mind. 6He who regards one day as special, does so to the Lord. He who eats meat, eats to the Lord, for he gives thanks to God; and he who abstains, does so to the Lord and gives thanks to God.
Romans 14:17-19 (New International Version)
17For the kingdom of God is not a matter of eating and drinking, but of righteousness, peace and joy in the Holy Spirit, 18because anyone who serves Christ in this way is pleasing to God and approved by men. 19Let us therefore make every effort to do what leads to peace and to mutual edification.