The part we have to play is to walk worthy of our calling, and as the apostle goes on to say, our calling is to be one: one body, one spirit, one faith, one baptism, one hope, just as we have one Lord and one Father. We are to be one bride of Christ. He is not a polygamist; He will not marry many brides but one united bride.
We in the church can be disunified if we fail to practice verses 2 and 3: Without lowliness (humility), without gentleness (meekness), without longsuffering (forebearance or patient endurance), without love and peace, we will never have unity. As long as we are proud, easily angered and offended, jump on every little thing, lack patience, and treat each other hatefully—as long as we cause strife—there will never be unity. Even with all that God does (I Corinthians 1:4-9), it will not happen. He will not force unity upon us if we show that we do not want it. The natural order of things is that we will disunify further if we fail to show Him that we are working toward it. So, without these virtues, even with God deluging us with His Spirit, we will not have unity.
Richard T. Ritenbaugh
Paul clearly links our hope with our calling, which is God's summons into His presence so that we may have a relationship with Him. In the context of the first paragraph of Ephesians 4, the implication is that this hope is a factor that unites us into one body. Our calling is an end to pessimism, negativity, and despair and the beginning of a confident, bright, and optimistic life filled with endless possibilities because this unique hope gives positive expectancy to life here and now and beyond the grave as well.
John W. Ritenbaugh
The Elements of Motivation (Part Three): Hope