God no longer expects His people to bring animal sacrifices to a temple made with hands. The Lord Jesus Christ sacrificed Himself for man, and in doing so, became the ultimate sacrifice, once and for all. To bring an animal to any religious facility in the present age would be directly disobedient to the clear teachings of the New Testament. Yet, the Lord still desires to receive sacrifices from men. The sacrifices today consist of believers presenting their bodies to the Lord (Romans 12:1) and giving thanks to Him with their lips (Hebrews 13:15). In Hebrews 13:16 the Bible also says “to do good and to communicate . . . for with such sacrifices God is well pleased.”
Separation is scriptural under a variety of different scenarios. Most commonly, believers understand that they are to separate from unbelievers (2 Corinthians 6:14). This does not imply that believers should not witness to the lost but that there should be no “fellowship” between the two. The Bible also indicates that there are times in which one believer should separate from another believer. Most often, this happens because of the propagation of false doctrine (Romans 16:17-18; 2 Thessalonians 3:6) or immoral practices (1 Corinthians 5:11). However, there may also be instances when believers separate for the purpose of furthering the work of God (Galatians 2:6-9).