Unity of the Spirit
For by one Spirit we were all baptized into one body — whether Jews or Greeks, whether slaves or free — and have all been made to drink into one Spirit. 1 Corinthians 12:13 NKJV
After you place your saving faith in Jesus Christ, immediately you are baptized into the Body of Christ by the Spirit and are made to drink into the Spirit. This is also a clear analogy of drinking water. For example, “on the last day of the Feast, Jesus stood and said in a loud voice, if anyone is thirsty, let him come to me and drink. Whoever believes in me, as the Scripture has said, streams of living water will flow from within him. By this he meant the Spirit, whom those who believed in him were later to receive” (John 37-39).
Water is not only an element of baptism, but it is also something we drink to sustain physical life. Just as we drink water, we also drink of the Holy Spirit when we are baptized into the Body of Christ. There can be no spiritual life without the presence and use of the Holy Spirit. The Holy Spirit not only gives us sustaining power in our spiritual life, but He also unifies us into one Body. This unification gives you oneness and sameness in the Spirit. Oneness is being unanimous in mind for the same purpose; it is agreement and togetherness (1 Cor. 1:10).
Just because of different backgrounds, gifts and abilities, personalities and temperaments, it doesn’t mean that the Holy Spirit is different or acts differently. The Spirit gives unity. This unity of the Spirit is given when you are baptized into the Body (text). But unity of the spirit is maintained not attained—you already have the unity (Eph. 4:3-6). Unity requires effort. To keep unity in the Body, the local church, marriage, or friendship, you must be able to distinguish between the essentials from the non-essentials. In essential matters, you need unity; in non-essentials, you give liberty; and, in all things, let there be charity! Unity of the Spirit is not uniformity; it is a spiritual commitment to endeavor to keep it!