In this verse we find a vision for our existence, "to glorify God". We glorify Him by proclaiming Him through warning and teaching everyone (Psalm 67, 96; Romans 10).
In this verse we find our goal in ministry, by making mature. Christ has called us to make disciples not decisions (Matthew 28:18-20). Disciples are those who are maturing in Christ. Christ church has been commissioned to equip its members, disciples, for works of ministry (Ephesians 4:11-16).
This verse not only provides us with our vision and our goal but our mission; everyone who believes. We cannot control who believes but we can control to what extent people have opportunity to believe. Paul reminds in 1 Corinthians 3:5-7 that some plant, some water, but it is God who gives the increase.