But as He who called you is holy, you also be holy in all your conduct, because it is written, “Be holy, for I am holy.” (1 Pet 1:15-16)
God is holy and we should also be holy in all our conduct. The basic idea of holiness in the Bible is separation from all that is profane. In Leviticus, God was concerned with the ritual of the sacrificial system as well as with ethical requirements. The biblical distinction between “clean” and “unclean” is the way God designated the difference between what He could receive into His presence and what must remain apart from Him. Only people, animals, and objects designated as clean could enter the tabernacle, and later the temple, as part of the worship of God. Specific rituals were instituted by God for making an “unclean” person or object “clean”. The designation of “clean” and “unclean” also implies a distinction between ethical character and behavior that is acceptable to God from that which is unacceptable.
“but, speaking the truth in love, may grow up in all things into Him who is the head–Christ –” (Eph 4:15)
Jesus Christ is our head. His will is our rule. His word is our law. We must be careful not to drift away from a firm commitment to Christ. To grow up in all things into Him, we need to know Him better and better so that after accepting Jesus Christ as Lord of our life, we will continue to follow Jesus and His leadership.
“Having been built on the foundation of the apostles and prophets, Jesus Christ Himself being the chief cornerstone.” (Eph 2:20)
The house of God is built upon the foundation of the apostles and the prophets, Christ Jesus Himself being the cornerstone. The definition of the cornerstone from Wikipedia: “The cornerstone (or foundation stone or setting stone) is the first stone set in the construction of a masonry foundation. All other stones will be set in reference to this stone, thus determining the position of the entire structure.”
Nevertheless the solid foundation of God stands, having this seal: “The Lord knows those who are His,” and, “Let everyone who names the name of Christ depart from iniquity.” (2Ti 2:19)
All believers are God’s workers. The Bible says that we are created in Christ Jesus to do good works, which God prepared in advance for us to do (Eph 2:10). A good worker will endure hardship, be faithful to the truth, and develop godly character.
“I have been crucified with Christ; it is no longer I who live, but Christ lives in me; and the life which I now live in the flesh I live by faith in the Son of God, who loved me and gave Himself for me.” (Gal 2:20)
We were once far from God and dead in sin, but we found life, light, and love in Jesus Christ and now Christ lives in us. Think and reflect, how does Christ live in us?