1 Corinthians 10:18

Behold Israel. An appeal is made to the record of the practices of the people whom God had favored with direct instructions concerning the method that was to be followed in worshiping Him.

After the flesh. That is, according to the flesh. The phrase denotes those who were Israelites by natural descent from Abraham. Even though they have failed to recognize Jesus as the Messiah, and have in some things turned aside from the counsel of God, the fact remains that the account of the laws and regulations relative to the Temple services, given by the Lord through Moses to the Jews while they were encamped at Sinai, is a reliable statement of the form of worship required of them by God. This record contains many principles of truth that pertain to Christians as much as to Jews, and the teaching of the unity that God desires to see among His people is one of the most important of those principles.

Partakers. Priests and laity became one in their united worship at the altar; that was their visible means of communion with God, and it was there that they were all on the same level before God and shared the fellowship of His family. This union in the sacrificial services of the altar identified them as members of the people of Israel, worshipers of Jehovah, the one true God.